Everything our engineering, sourcing, and compliance work produced for this product. Nothing here is marketing — it's the actual document we'd hand a contract manufacturer.
Product family: WanderBand — the WanderVerse wrist-worn wearable Device IDs: WV-WEAR-BAND-LITE · WV-WEAR-BAND-STD · WV-WEAR-BAND-PRO · WV-WEAR-BAND-ULTRA Chassis: new — Wrist-Small (38-42mm) + Wrist-Large (46-48mm) + Wrist-Rugged (50-52mm titanium) Status: spec v2.1 — post-validation (Perplexity tech + local-LLM clinical + sensor-tech audit + dual-mode principle applied), SOP v2 native, platform + modules, identity-aware Supersedes: ~/Downloads/Claude/wandersafe/specs/WANDERBAND-BUILD-SPEC.md v1.0 (April 2026) — this version adds 4-tier architecture, modular sensor-puck, trans-affirming clinical biometrics, identity-aware safety features, sensor roadmap through 2029, dual-SoC architecture, standalone + industry-integration modes Ship target: Lite + Standard Q3 2027 · Pro Q1 2028 · Ultra Q3 2028 Date: 2026-04-24
Shared family docs: ../_WORKFLOW-SOP.md · ../_HARDWARE-TOOLCHAIN.md · ../_FAMILY-EXPANSION-REVIEW.md · ../_ESIM-MULTI-CARRIER.md · ../_STANDALONE-AND-PLATFORM-INTEGRATION.md · _VALIDATION-AND-SENSOR-EXPANSION.md (companion validation doc).
---
This section supersedes the v2.0 content where they conflict. Body below retained for context; v2.1 rules.
Architectural:
Compliance budget corrections (v2.0 undershot):
Firmware engineering budget correction: WanderOS-Band on Zephyr 3.7+ is production-credible BUT Zephyr gives us kernel + sensors + BLE; everything else (UI engine, OTA policy, notification permission model, companion app platform, third-party app ecosystem) is DIY scope. Budget $400-700k firmware engineering through Ultra ship, not $25-50k. 2-3 engineers × 18 months.
Non-invasive glucose reality-check: Rockley Photonics 2028 projection is optimistic per local-LLM ("may still be 3+ years away"). Ultra ships "glucose-ready" hardware (pins + slot + software framework); functional glucose puck ships when Rockley / Apple / Samsung tech actually matures, likely 2029-2030. Marketing language calibrated accordingly.
HRT biometric research: published literature is limited 2024-2026. WanderVerse commits to fund our own IRB-reviewed research program — academic partner + opt-in aggregated data + peer-reviewed publication. Budget $200-500k over 2-3 years. This is our clinical-research moat.
Sensor additions (from tech audit):
Software-only features enabled on existing hardware (firmware v1.x releases): AFib detection (PPG-only), sleep apnea indication, pre-diabetes risk estimation, migraine prediction (barometric + sleep), PCOS characterization, Parkinson's tremor detection (accel), seizure detection, cognitive-decline early indicators (gait + typing rhythm), chronic-fatigue biomarker fusion, burnout early-warning.
Revised pricing (reflecting +BOM from sensor additions):
Margins hold at 48-53%.
Standalone + industry-integration mode (new per dual-mode principle):
Ambassador-assembly wearable-specific note: the small form factor changes Ambassador workflow — per-unit Ambassador assembly time is 25-40 minutes (vs 7-12 min for Bridge Mini) due to micro-components + waterproofing seals + sensor puck alignment + strap verification + per-unit biometric calibration. Fewer Ambassadors per station; one Ambassador does 12-18 bands per day at DVT yield.
Bottom line: v2.1 is honestly more expensive + more ambitious + more carefully-positioned than v2.0. Spec costs went up (mostly in cert + firmware), but so did the feature set and the standalone-mode requirement. Net effect: stronger product, tighter numbers, honest about what ships when.
---
---
WanderBand is a privacy-first, repair-friendly, identity-aware wearable that does things no other smartwatch does — and does the things they all do, without sending your biometrics to a corporate cloud.
Four tiers serving four buyers:
| Tier | Price | Who | Killer feature |
|---|---|---|---|
| **Lite** | $129 | Everyday health tracker for privacy-conscious + budget-conscious buyers | Basic biometrics + silent panic + **no cloud ever** at Fitbit Versa pricing |
| **Standard** | $249 | Daily-driver smartwatch replacement for Apple Watch / Galaxy Watch users | Everything consumer smartwatches do + **trans-affirming biometrics + covert mode** |
| **Pro** | $399 | Health-data power users, survivors, trans/HRT bodies wanting clinical-grade | ECG + cuffless BP + HRV + glucose-ready + LTE eSIM + LoRa mesh |
| **Ultra** | $699 | Expedition, mobile-living, HAVEN, elite athletes, disaster-prep | Titanium + sapphire + 10-day battery + satellite SOS + dive mode + solar assist |
All four tiers ship with:
---
Primary audiences:
1. Trans, nonbinary, and HRT-using people — the only wearable calibrated for your body, not a cis baseline. Menstrual + hormone-cycle tracking that's respectful, accurate, and doesn't assume your gender. HRV + stress metrics adjusted for exogenous hormones. 2. Survivors of intimate partner violence / trafficking / abusive households — silent panic button, duress unlock code, covert mode hides safety features from someone watching your wrist, emergency evacuation triggers location + audio recording + HAVEN alert. 3. Digital nomads / mobile-living / LGBTQ+ travelers — LTE eSIM + Airalo integration (via companion WanderRouter Standard-5G/Ultra), LoRa mesh to HAVEN network, satellite SOS. 4. High-privacy households — data local-only; no Apple/Google/Samsung health cloud. Family filtering + identity-aware defaults inherit from WanderOS ecosystem. 5. Clinical self-trackers — ECG + HRV + temp + cuffless BP for people managing conditions (AFib, hypertension, PCOS, perimenopause, long COVID, thyroid, trans health). 6. Elderly safety / aging-in-place — fall detection + heart rate anomaly alerts + location sharing with trusted contacts + medication reminders (WanderRx integration).
Who it's NOT for:
---
No other wearable ships any of these. Together they are a category no one else competes in.
Mainstream wearable algorithms are trained on cisgender-baseline data. For trans + HRT bodies, this means:
WanderBand:
Five layers of safety features that work without anyone watching your wrist being able to tell:
Single feature that combines everything the band can do into one pre-packaged response. Triggered by: silent panic, duress unlock, crash detection, fall detection, AFib detection, or voice trigger.
Pro + Ultra tiers include a low-power LoRa module. When cellular fails:
Respectful is specific. It means:
Smoothly paired with:
---
Form factor: Wrist-Small (40mm polymer case), 15mm thick Screen: 1.3" AMOLED 320×320, 600-nit, not always-on (battery) Case material: Polymer Water resistance: IP67 (handwashing, rain, shower — not swimming) Battery life: 7 days typical use, 12 days always-off-screen Sensors: HR (PPG), accelerometer, gyroscope, altimeter, skin temperature Connectivity: BLE 5.3 + WiFi 2.4 GHz (limited to onboarding + time sync) Charging: USB-C magnetic pogo dock What it does NOT have: GPS, ECG, SpO2, cellular, NFC, microphone, speaker
Target buyer: fitness-tracker buyer who wants privacy + silent panic + doesn't need premium smartwatch features. Competes with Fitbit Versa ($229), Amazfit GTR ($149), Xiaomi Mi Band (but with real case, not just strap).
Form factor: Wrist-Small (42mm) OR Wrist-Large (46mm aluminum), 11mm thick Screen: 1.5" or 1.8" AMOLED LTPO 420×420/480×480, 1000-nit peak, always-on optional Case material: 6061-T6 aluminum, 3 color options (Black / Champagne / Deep-Teal) Water resistance: 5 ATM (swimming OK, shallow snorkeling) Battery life: 5 days typical / 2 days with always-on-display Sensors: Lite's full sensor suite + SpO2 (blood oxygen), PPG-based HRV, 16-channel ECG-adjacent (proximity-only, not diagnostic), high-accuracy GPS (dual-band L1), BLE 5.4 + WiFi 6, NFC (Google Wallet / Apple Wallet equivalent via WanderOS) Connectivity: BLE + WiFi 6 + NFC + (no cellular — phone-paired for connectivity) Charging: Same pogo-pin dock as Lite Extras over Lite: Microphone, small speaker (IP-rated), haptic LRA, always-on display option
Target buyer: Everyday smartwatch daily driver. Replaces Apple Watch SE ($249), Galaxy Watch 7 ($299), Pixel Watch 3 ($349). For buyers who want premium experience + privacy + identity-aware features.
Form factor: Wrist-Large (46mm) OR Wrist-Rugged (49mm stainless steel option), 12mm thick Screen: 1.8" AMOLED LTPO 480×480, 1500-nit peak, always-on standard, sapphire crystal Case material: 316L stainless steel (standard) OR 6061-T6 aluminum (base Pro) Water resistance: 10 ATM + swim-proof pogo-pin seal Battery life: 5 days typical / 3 days with always-on / 1.5 days with LTE active Sensors: Standard's full suite + clinical-grade ECG (single-lead, FDA-clearance pathway pursued), continuous-wear cuffless blood pressure (PPG+ECG+machine-learning, with initial cuff calibration), skin temperature continuous, bioimpedance body composition (body fat %, muscle %, hydration), AFib detection algorithm, GLUCOSE-READY SLOT (hardware pins for future non-invasive glucose module when tech ships 2027-2028) Connectivity: BLE + WiFi 6 + NFC + LTE Cat-4/5 eSIM via Telit ME910G1-WW or similar + LoRa 915 MHz module for HAVEN mesh Charging: Pogo dock + Qi wireless charging (slow) Cellular: eSIM + dual-profile + Airalo compatibility (via WanderRouter family) + 24 eSIM slots Extras over Standard: Microphone array (2 mics), louder speaker for phone calls, bigger battery, LTE standalone operation (leave phone home), LoRa mesh access, glucose-ready hardware, clinical-grade heart sensors
Target buyer: Health-data power users, chronically-ill people managing conditions (AFib, hypertension, diabetes — with glucose module shipping 2027+), trans/HRT bodies wanting full clinical precision, survivors wanting maximum safety capability. Competes with Apple Watch Series 11 ($399-499), Samsung Galaxy Watch 7 Classic ($449), Garmin Venu 4 ($449).
Form factor: Wrist-Rugged (52mm titanium case), 14mm thick Screen: 1.92" AMOLED LTPO 502×410, 3000-nit (direct-sunlight-readable), sapphire crystal, second-gen Gorilla Victus back Case material: Grade 5 titanium (primary) + PVD coating options + optional Ambassador-finished wood inlay bezel Water resistance: 100m WR + EN 13319 dive-mode rated (recreational dive to 40m) Battery life: 10 days typical use / 5 days with always-on + continuous GPS Sensors: Pro's full suite + dual-frequency GPS L1+L5 (military-grade precision 0.3m), depth sensor (dive mode), altimeter/barometer, compass, 3-axis magnetometer, ambient light + UV, skin temperature array (multi-point, not single), non-invasive glucose module PRE-INSTALLED (Rockley Photonics class — shipping 2028 per current roadmap), sleep radar (presence + breathing rate without contact) Connectivity: Pro's full + 3GPP NTN satellite SOS (Skylo or Iridium Certus partnership — 2028 launch), UWB (Apple-compatible precision location), 60 GHz mmWave radar (gesture + presence), thermal IR sensor (skin + environment) Charging: Pogo dock + Qi wireless + solar surface assist (2-3W input from sapphire crystal surface, Garmin Fenix Solar-class — adds 2-5 days of typical use in sunlight) Extras over Pro: Full-satellite SOS (no phone needed), extreme environmental sensors, dive computer mode, tactical mission modes (pre-configured profiles for night ops, high-altitude, deep-desert, back-country), titanium + sapphire everywhere, Ambassador-hand-finished bezel option
Target buyer: Expedition + mobile-living + HAVEN mission-partners + emergency-prep + elite athletes + buyers who want everything + identity-aware features for high-risk travelers. Competes with Apple Watch Ultra 3 ($799), Garmin Fenix 8 ($999), Suunto Vertical ($629), Polar Grit X2 Pro ($599).
---
The underside of every WanderBand — the part that touches your skin — is a detachable sensor module ("sensor puck") held by 4× small screws + board-to-board connector.
Why: new biometric tech ships every 12-18 months. Apple Watch can't add non-invasive glucose because the whole device is sealed. WanderBand can because the puck swaps.
Ship tiers:
Upgrade cost: Send-back to Ambassador depot, puck swap, $25 service fee + puck price. Your original band, new sensors. No existing watch vendor offers this — every other wearable goes to e-waste when tech advances.
Industry-standard 22mm quick-release. Works with:
Strap swap takes 5 seconds, no tools, per Standard 2 + 6b.
Three platform sizes, interoperable with all tiers:
Users with smaller wrists can order Lite/Standard in 40mm; larger wrists get 46mm. Pro/Ultra have defined form factors (not user-sized).
Every WanderBand's rear sensor puck has an engraved inner ring visible when the puck is removed for service/upgrade. Contains:
Permanent, weatherproof, part of the device's history. Never removable without destroying the puck.
---
Mapped against _FAMILY-EXPANSION-REVIEW.md 17-category superset adapted for wearables:
| Feature | Lite | Std | Pro | Ultra | Notes |
|---|---|---|---|---|---|
| Optical HR (PPG) | ✅ | ✅ | ✅ | ✅ | Continuous + on-demand |
| 24-hour HR trends | ✅ | ✅ | ✅ | ✅ | |
| HRV (time + frequency domain) | — | ✅ | ✅ | ✅ | HRT-calibrated profiles |
| SpO2 | — | ✅ | ✅ | ✅ | Continuous on Pro/Ultra |
| ECG (single-lead, FDA-clearance pathway) | — | — | ✅ | ✅ | AFib detection validated |
| Cuffless blood pressure | — | — | ✅ (with periodic cuff calibration) | ✅ | |
| Skin temperature (single-point) | ✅ | ✅ | ✅ | ✅ | |
| Skin temperature (multi-point) | — | — | — | ✅ | Ultra's multi-array |
| Bioimpedance body composition | — | — | ✅ | ✅ | Body fat/muscle/hydration |
| Non-invasive glucose (HW-ready) | — | — | 🆕 slot | 🆕 module | Shipping depends on Rockley/Apple/Samsung 2027-2028 tech |
| Respiratory rate (PPG-derived) | ✅ | ✅ | ✅ | ✅ | |
| Stress (HRV-based) | — | ✅ | ✅ | ✅ | HRT-calibrated |
| Sleep tracking (stages) | ✅ basic | ✅ | ✅ | ✅ enhanced | Ultra has sleep radar for partner-in-bed detection |
| Fall detection | — | ✅ | ✅ | ✅ | |
| Crash detection (vehicle) | — | ✅ | ✅ | ✅ | Pairs with WanderCar |
| AFib detection + alert | — | — | ✅ | ✅ | FDA-submitted algorithm |
| Feature | Lite | Std | Pro | Ultra |
|---|---|---|---|---|
| BLE 5.3/5.4 | ✅ | ✅ | ✅ | ✅ |
| WiFi 2.4 GHz | ✅ (onboarding) | ✅ | ✅ | ✅ |
| WiFi 6 dual-band | — | ✅ | ✅ | ✅ |
| NFC | — | ✅ | ✅ | ✅ |
| Cellular LTE (eSIM) | — | — | ✅ | ✅ |
| Cellular 5G (when modem size shrinks, 2028+) | — | — | 🆕 roadmap | 🆕 roadmap |
| LoRa 915 MHz mesh | — | — | ✅ | ✅ |
| UWB (Apple-precision) | — | — | — | ✅ |
| GPS single-band L1 | — | ✅ | ✅ | ✅ |
| GPS dual-band L1+L5 | — | — | ✅ Pro Max opt | ✅ |
| GLONASS / Galileo / BeiDou | — | ✅ | ✅ | ✅ |
| 3GPP NTN satellite SOS | — | — | — | 🆕 2028 launch |
| Bluetooth audio (calls) | — | ✅ | ✅ | ✅ |
| Feature | Lite | Std | Pro | Ultra |
|---|---|---|---|---|
| AMOLED screen | ✅ 1.3" | ✅ 1.5-1.8" | ✅ 1.8" | ✅ 1.92" |
| LTPO (variable refresh) | — | ✅ | ✅ | ✅ |
| Always-on display | — | ✅ opt | ✅ | ✅ |
| Peak brightness (nits) | 600 | 1000 | 1500 | 3000 |
| Sapphire crystal | — | opt | ✅ | ✅ |
| Touch | ✅ | ✅ | ✅ | ✅ |
| Rotating crown | — | ✅ | ✅ | ✅ |
| Side button | ✅ | ✅ | 2× | 3× (includes dive/lap button) |
| Haptic LRA | basic | ✅ premium | ✅ premium | ✅ premium |
| Microphone | — | ✅ | ✅ dual | ✅ array |
| Speaker | — | ✅ small | ✅ | ✅ rugged |
| Feature | Lite | Std | Pro | Ultra |
|---|---|---|---|---|
| Cycle tracking (any body that cycles) | — | ✅ | ✅ | ✅ |
| HRT dose tracking (WanderRx) | — | ✅ | ✅ | ✅ |
| Sleep score | ✅ basic | ✅ | ✅ | ✅ detailed |
| Readiness score (HRV+sleep+activity) | — | ✅ | ✅ | ✅ |
| Training plans + structured workouts | — | ✅ basic | ✅ | ✅ advanced |
| Multi-sport tracking | ✅ basic | ✅ | ✅ | ✅ dive + tactical modes |
| Menstrual cycle predictions | — | ✅ | ✅ | ✅ |
| Ovulation prediction (temp+HRV+symptoms) | — | — | ✅ | ✅ |
| Pregnancy mode | — | ✅ | ✅ | ✅ |
| Medication reminders (WanderRx) | ✅ | ✅ | ✅ | ✅ |
| Perimenopause + menopause tracking | — | ✅ | ✅ | ✅ |
| Feature | Lite | Std | Pro | Ultra |
|---|---|---|---|---|
| Silent panic button | ✅ | ✅ | ✅ | ✅ |
| Duress unlock code | ✅ | ✅ | ✅ | ✅ |
| Covert watch faces | ✅ | ✅ | ✅ | ✅ |
| Hidden app folder (HR-pattern second factor) | — | ✅ | ✅ | ✅ |
| Scheduled public mode | ✅ | ✅ | ✅ | ✅ |
| Emergency Evacuation Mode | ✅ limited (cellular via phone) | ✅ | ✅ | ✅ full (incl. satellite SOS) |
| Location share with trusted contacts | ✅ | ✅ | ✅ | ✅ |
| HAVEN safe-zone beacon detection | — | — | ✅ (via LoRa + BLE) | ✅ |
| HAVEN operator alert | — | — | ✅ | ✅ |
| Safe passage mode | ✅ | ✅ | ✅ | ✅ |
| Trans-affirming biometrics calibration | — | ✅ | ✅ | ✅ |
| Post-Roe privacy (disable cycle tracking + wipe) | — | ✅ | ✅ | ✅ |
| HIPAA-safe clinician export | — | ✅ | ✅ | ✅ |
| Feature | Lite | Std | Pro | Ultra |
|---|---|---|---|---|
| No cloud account required | ✅ | ✅ | ✅ | ✅ |
| No telemetry by default | ✅ | ✅ | ✅ | ✅ |
| Data local only | ✅ | ✅ | ✅ | ✅ |
| Data backup to user-chosen target (WanderVault / WanderRouter NAS / self-hosted HA) | ✅ | ✅ | ✅ | ✅ |
| Encrypted on-device storage | ✅ | ✅ | ✅ | ✅ |
| Secure element (SE051 or integrated) | — | ✅ | ✅ | ✅ |
| Health data never to Apple Health / Google Fit by default | ✅ | ✅ | ✅ | ✅ |
| Identity-aware defaults (LGBTQ+/trans/undoc aware) | ✅ | ✅ | ✅ | ✅ |
| Encrypted Bluetooth comms | ✅ | ✅ | ✅ | ✅ |
| Disable location with one physical action | ✅ (crown-hold) | ✅ | ✅ | ✅ |
| Feature | Lite | Std | Pro | Ultra |
|---|---|---|---|---|
| Water resistance | IP67 | 5 ATM | 10 ATM | 100m + dive |
| Case material | Polymer | 6061 aluminum | Aluminum or 316L stainless | Grade 5 titanium |
| Screen | Gorilla Glass 5 | Gorilla Glass 6 / opt sapphire | Sapphire | Sapphire |
| Drop rating | 1m | 1.5m | 2m | 2.5m + IK08 impact |
| Operating temp | -10 to +50°C | -15 to +55°C | -20 to +60°C | -40 to +70°C |
| Integration | Lite | Std | Pro | Ultra |
|---|---|---|---|---|
| WanderOS management | ✅ | ✅ | ✅ | ✅ |
| WanderRouter family (RF-power adjustment when worn) | ✅ | ✅ | ✅ | ✅ |
| WanderNode Hub (presence detection) | ✅ | ✅ | ✅ | ✅ |
| WanderSense | — | ✅ | ✅ | ✅ |
| WanderCam/Bell/Lock (band-as-key) | — | ✅ | ✅ | ✅ |
| WanderCar (driver ID + crash detection) | — | ✅ | ✅ | ✅ |
| WanderRx (HRT + medication) | ✅ | ✅ | ✅ | ✅ |
| WanderVault (encrypted backup) | ✅ | ✅ | ✅ | ✅ |
| WanderShield (survivor safety) | ✅ | ✅ | ✅ | ✅ |
| WanderHealthy / WanderHeart / WanderMind | ✅ | ✅ | ✅ | ✅ |
| HAVEN safe-zone detection | — | — | ✅ | ✅ |
| WanderMesh LoRa | — | — | ✅ | ✅ |
| Apple Health / Google Fit bridge (opt-in, one-way) | ✅ | ✅ | ✅ | ✅ |
| Home Assistant / Matter integration (via WanderNode Hub) | ✅ | ✅ | ✅ | ✅ |
| Voice assistant (Auren local or cloud-free) | — | ✅ | ✅ | ✅ |
| Axis | Lite | Std | Pro | Ultra |
|---|---|---|---|---|
| Case size options | 40mm | 42mm or 46mm | 46mm or 49mm | 52mm |
| Case color/finish | 3 (Black/Champagne/Teal) | 3 + Pro | 3 + Lux stainless | 3 + Lux titanium + wood bezel |
| Screen size | fixed | 2 options | fixed | fixed |
| Strap (stock) | silicone | silicone or fluoro | fluoro or nylon | fluoro/nylon + titanium opt |
| Lux Artisan strap option | +$40 | +$70 | +$120 | +$150-500 (Ambassador) |
| Ambassador-engraved glyph | ✅ standard | ✅ | ✅ | ✅ hand-engraved by named Ambassador |
| Sensor puck tier | v1 only | v1 only | v1.5 (glucose-ready slot) | v2 (glucose-installed when ready) |
---
One of WanderBand's biggest differentiators: you buy it once, it gets better over time. New biometric modules ship via send-back upgrade.
| Year | Tech | Availability | Puck tier |
|---|---|---|---|
| 2027 | PPG + HRV + skin temp + ECG (clinical-grade) | Ship-day all tiers | v1.5 on Pro |
| 2027-Q3 | Continuous cuffless BP (with cuff calibration) | Pro ship | v1.5 |
| 2028-Q1 | Dual-frequency GPS, NTN satellite SOS | Ultra ship | — |
| 2028-Q3 | **Non-invasive glucose** (Rockley Photonics optical tech, Samsung/Apple parallel efforts) | Ultra ship as platform; Pro as upgrade | v2 |
| 2029-Q1 | Continuous hydration, ketones, lactate | Upgrade modules | v2.5 |
| 2029-Q2 | Breath biomarkers (CO2, acetone — diabetes indicator) | Upgrade module | v3 |
| 2030+ | Emerging — sweat-sensor ions, real-time cortisol, UV-visible-spectroscopy biomarkers | Upgrade modules | v4 |
The promise: Your 2027 WanderBand Pro with a 2028 glucose puck becomes a 2029 hydration-puck — same chassis, same software, same memories, same Ambassador. This alone is more repair-culture than anything the wearable industry has ever shipped.
---
Platform: ~$52 FOB (MT2502 class SoC or Apollo4 + minimal sensor puck v1 + polymer case + small AMOLED + basic battery) PCBA at 1k: +$15 FOB total: ~$67 Margin: ~48%
Platform: ~$98 FOB (nRF5340 or Ambiq Apollo4 Blue Plus + sensor puck v1 + aluminum case + larger AMOLED + better battery + WiFi 6 + NFC) PCBA at 1k: +$20 FOB total: ~$118 Margin: ~53%
Platform: ~$175 FOB (same SoC + sensor puck v1.5 with ECG/cuffless BP hardware + stainless case + sapphire + LTE eSIM module + LoRa module + bigger battery) PCBA at 1k: +$30 FOB total: ~$205 Margin: ~48%
Platform: ~$320 FOB (titanium case + glucose-ready puck v2 + dual-band GPS + NTN satellite modem + solar surface + larger battery + premium everything) PCBA at 1k: +$45 FOB total: ~$365 Margin: ~48%
---
Cert budget Lite + Standard: ~$8-15k total family launch cost
Pro/Ultra claim clinical-grade biometrics for ECG, cuffless BP, AFib detection, glucose (when shipping). This triggers:
Cert budget Pro + Ultra: ~$200k (ECG + cuffless BP + AFib) plus ~$500k (glucose when shipped) plus annual audit costs
Phased strategy: ship Pro/Ultra with "wellness-tier" claims at v1.0 (not medical-grade), pursue FDA clearance for ECG + AFib in v1.1 (6-month post-launch), clinical validation study for cuffless BP in v1.5, glucose as a separate product launch in 2028 once Rockley tech matures.
Pro + Ultra add: FCC Part 22/24/27 (cellular), PTCRB, GCF, carrier-specific (T-Mobile, Verizon, AT&T, Google Fi). Telit ME910G1-WW or equivalent for LTE Cat-M1 — has modular cert we can inherit.
Ultra adds: 3GPP NTN for satellite SOS — this requires partnership with Skylo, Iridium, or Globalstar; cert pathway defined by the network operator.
---
Why not fully open PCBs: our nearest competitors (Whoop, Fitbit, Apple) have sealed everything. Open hardware strap + community firmware + repairable sensor puck is already radical. Full open PCB + mechanical design may come in 2029+ when the product has proven itself and competitors can't undercut us before we've built our customer base.
Framework Laptop is our north star — they open more over time. We'll do the same.
---
If you buy Pro in 2027 for $399 and use WanderVerse's upgrade service over the next 7 years:
| Year | Upgrade | Cost | Your watch has... |
|---|---|---|---|
| 2027 | Initial purchase | $399 | ECG + cuffless BP (beta) + HRV + HRT profile |
| 2028 | Glucose puck module | +$120 | + non-invasive glucose + clinical-grade BP |
| 2029 | Hydration + lactate puck | +$80 | + training-grade sports biometrics |
| 2030 | Emerging sensor puck | +$70 | + 2030's killer biometric |
| 2031 | Battery replacement | +$40 | + fresh battery |
| 2032 | Cover refresh (Pro CNC → Lux wood bezel) | +$180 | + Lux-tier aesthetics |
| 2033 | Ambassador-re-signed on anniversary request | +$30 | + new Ambassador glyph inside |
Total 7-year cost: $917.
Versus Apple Watch: $399/year replacement × 7 = $2,793. And at year 7, Apple's 2027 model is unsupported.
Framework-level longevity for wearables. No one else offers this.
---
All Ambassador-assembled. All user-DIY-repairable or send-back-swappable:
| Service | Cost | Who | Time |
|---|---|---|---|
| Battery replacement (DIY) | $30 battery + shipping | user | 30 min, 1 tool |
| Battery replacement (send-back) | $50 battery + $25 service + shipping | Ambassador | 5 days |
| Sensor puck upgrade | module price + $25 service + shipping | Ambassador | 5 days |
| Cover/case refresh | cover price + shipping (DIY swap) | user | 5 min |
| Screen replacement (Lite/Std) | $80 screen + $25 service | Ambassador only | 7 days |
| Screen replacement (Pro/Ultra sapphire) | $150-250 screen + $40 service | Ambassador only | 7 days |
| Firmware update (WanderOS-Band) | free | user | OTA via phone |
| Straps | $20-500 via catalog | user | 5 seconds |
| Lux Artisan strap (custom) | $150-500 + custom time | Ambassador Artisan | 2-6 weeks |
| End-of-life recycling | free + $15 credit toward next-generation WanderBand | WanderVerse | — |
Repair culture concretely: every WanderBand ships with a repair tool pouch + sensor-puck tutorial video + strap-swap video + battery-replacement video. No warranty-void-if-opened. Full Framework-laptop-style user-first discipline.
---
| Feature | WanderBand | Apple Watch | Garmin | Fitbit | Samsung | Whoop | Oura |
|---|---|---|---|---|---|---|---|
| No cloud account required | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| Trans-affirming biometrics + HRT profiles | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| Modular sensor puck (upgrade over years) | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| Silent panic + duress unlock + covert mode | ✅ | limited | ❌ | ❌ | ❌ | ❌ | ❌ |
| LoRa mesh access (cellular-down safety) | ✅ Pro+ | ❌ | limited | ❌ | ❌ | ❌ | ❌ |
| Identity-aware defaults | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| Ambassador-signed supported-employment assembly | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| 7-year parts + firmware guarantee | ✅ | 3 yr typical | 2 yr | 2 yr | 2 yr | subscription | 2 yr |
| User-replaceable battery | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| Dive mode (rec dive 40m) | ✅ Ultra | ✅ Ultra 2/3 | ✅ | ❌ | ❌ | ❌ | ❌ |
| Satellite SOS | ✅ Ultra (2028) | ✅ (paired) | ✅ inReach | ❌ | ❌ | ❌ | ❌ |
| Non-invasive glucose | ✅ Ultra (2028) | ❌ (research) | ❌ | ❌ | ❌ (research) | ❌ | ❌ |
| Post-Roe privacy (disable cycle + wipe) | ✅ | ❌ | ❌ | ❌ | ❌ | ❌ | ❌ |
| Pay-per-service (not subscription) | ✅ | ✅ | ✅ | subscription creep | ✅ | **subscription-locked** | ✅ |
The moat: trans-affirming + survivor-affirming + modular-upgradable + open-firmware + Ambassador-assembled + privacy-first. No competitor touches 3 of these, let alone 6.
---
1. Non-invasive glucose supplier — Rockley Photonics roadmap assumed; if delayed, Pro/Ultra "glucose-ready" slot stays empty longer. Mitigation: don't premarket glucose as ship-day feature, promise "when Rockley ships." 2. 3GPP NTN satellite SOS partner — Skylo, Iridium Certus, Globalstar — Stage 4 research. Ultra's satellite SOS may slip to 2028-Q4+ depending on network partner. 3. FDA 510(k) ECG clearance path — we'll submit at v1.1 (post-ship), so v1.0 Pro/Ultra ship with "wellness ECG" not "medical ECG." Marketing copy needs to be careful. 4. HRT biometric calibration research — published research on HRT + HRV / sleep / metabolic rate is limited 2024-2026. WanderVerse commits to our own IRB-reviewed research contribution. This is a moat opportunity: WanderVerse-affiliated clinical research on trans health biometrics, with opt-in aggregate (differential privacy) datasets feeding our algorithms + publishing peer-reviewed papers. 5. Battery chemistry trade-off — LiFePO4 is safer + longer cycle life but lower energy density = bigger/heavier. Li-ion (LCO/NMC) is what competitors use. Decision: ship Li-ion (user-replaceable, standard chemistry) with optional LiFePO4 upgrade for users who want it at a weight penalty. 6. Sensor-puck connector interface — proprietary pin design that survives 100+ swap cycles without fatigue. Magnetic pogo-pin with latch? Zero-insertion-force spring-loaded? Stage 3 mechanical engineering decision. 7. Cellular carrier activation for Pro+ eSIM — same challenges as WanderRouter Standard-5G. Apply the same architecture (Airalo + Holafly + Nomad, multi-profile eUICC). 8. Pricing sensitivity — is $129 Lite achievable with a real AMOLED + metal crown + magnetic dock? Validates at Stage 4 CM quote. Fallback: $149 Lite. 9. Supply chain resilience — wearable SoCs (Ambiq, Nordic, Qualcomm) are more concentrated than networking silicon. Second-source discipline from day 1.
---
| Qtr | Milestone |
|---|---|
| 2026-Q3 | Stage 0-5 (feature matrix, BOM, compatibility, DFM/DFA) — largely done in this spec |
| 2026-Q4 | Stage 6-7 (thermal, EMC, compliance) + Stage 4 Perplexity validation |
| 2027-Q1 | **EVT** — Lite + Standard first tier prototype fab (250 units each) |
| 2027-Q2 | DVT + cert runs for Lite + Standard |
| 2027-Q3 | **Lite + Standard first customer ship** |
| 2027-Q4 | Pro EVT |
| 2028-Q1 | **Pro first customer ship** |
| 2028-Q2 | Ultra EVT (assumes Rockley glucose + NTN partner) |
| 2028-Q3 | **Ultra first customer ship** |
18 months from spec-completion to full 4-tier family shipping.
---
| Tier | Volume est. | FOB avg | Retail avg | Revenue |
|---|---|---|---|---|
| Lite | 3000 | $67 | $129 | $387k |
| Standard | 2500 | $118 | $249 | $623k |
| Pro | 800 | $205 | $399 | $319k |
| Ultra | 250 | $365 | $699 | $175k |
| Strap catalog attach (~25%) | — | — | ~$40 avg | $65k |
| Sensor-puck upgrade revenue (year 2+) | — | — | $100 avg | ramping |
| **Total** | **6,550** | — | — | **~$1.57M / 18 months** |
Comparable to WanderRouter family first-18-month revenue. Together: ~$3.1M gross revenue across both families in the first 18 months post-launch.
---
Full SOP v2 artifact structure (to fill in Stage 2-10 detailed CSVs/docs):
wanderband/
├── WANDERBAND-SPEC.md (this doc)
├── FEATURE-MATRIX.md (detailed per-tier — extract above)
├── BOM-platform.csv (per-tier BOMs)
├── BOM-modules.csv (configurator + puck upgrades)
├── CONFIGURATOR.md (full axes + example configs)
├── COMPATIBILITY.md (sensor puck interface + strap compat)
├── SOURCING.csv (Stage 4 — supplier research)
├── DFM-DFA-DFT.md (wearable-specific assembly challenges)
├── THERMAL-EMC.md (wrist-worn RF + thermal)
├── COMPLIANCE.md (FDA + cellular + battery + global)
├── HW-FW.md (Zephyr + WanderOS-Band stack)
├── SERVICE-FLOW.md (repair + upgrade + Ambassador choreography)
├── GATE.md (EVT/DVT/PVT per tier)
├── DECISIONS.md (running log)
└── STL-OPEN-FILES/
├── README.md
├── strap-quick-release-22mm.stl
├── sensor-puck-tool-guide.stl
├── charging-dock-base.stl
└── repair-caddy.stl
(This spec is the anchor; the detailed CSVs + sub-docs can be extracted from this content into the individual files over next session if needed for implementation-handoff fidelity.)
---
WanderBand is a genuinely aspirational product that combines:
1. Clinical-grade biometrics at Apple Watch retail 2. Trans-affirming algorithms no one else has even tried to build 3. Survivor-grade safety features nobody else ships 4. Modular sensor-puck architecture that keeps the band relevant for 7+ years 5. Repair culture — user-replaceable battery, 22mm straps, Ambassador-assembled 6. Privacy-first default — no cloud, data stays on your body 7. WanderVerse ecosystem integration — routers, cameras, cars, health, safety all coordinated 8. Open firmware — WanderOS-Band + Zephyr; AsteroidOS flash compatible
Four tiers from $129 Lite to $699 Ultra. Ambassador-engraved case backs. 7-year parts guarantee. Sensor upgrades via send-back. Community STL straps. LoRa mesh to HAVEN network.
No other wearable on the market in 2026 has even 3 of these. WanderBand has all 8.
Ready for implementation engineering + compliance path + first RFQ cycle.