WHOOP MG 27.3g Medical-Grade On-Demand ECG, Blood Pressure Insights & 14-Day AI Longevity Band
27.3-gram (34.7×24.0×10.6mm) screenless IP68 cardiovascular and longevity strap integrating conductive-clasp single-lead ECG Heart Screener (FDA-cleared AFib detection), cuff-calibrated overnight systolic/diastolic Blood Pressure Insights, Healthspan Pace-of-Aging AI coaching, and 14+ day battery life with slide-on Wireless PowerPack charging.
Editorial Rating Methodology (★ 4.8 / 5.0): This score is an internal editorial evaluation compiled by the RECIWO Labs editorial team—not a user poll or crowd-voted rating. It assesses published silicon compute efficiency (25%), optical/sensor/actuator engineering (25%), battery & thermal envelope (20%), SDK/software openness (15%), and price-to-specification value (15%) based on official manufacturer datasheets and public technical documentation. Learn more about our evaluation rubric →
Key Engineering Highlights
- Embeds dry biopotential contact pads into the scalloped chassis and SuperKnit Luxe clasp to capture clinical on-demand single-lead ECG waveforms and screen for Atrial Fibrillation (AFib)
- Delivers daily morning systolic and diastolic Blood Pressure Insights by modeling nocturnal pulse-wave morphology, HRV, and vascular recovery after a one-time cuff calibration
- Extends single-charge runtime past 14 days inside a 7% smaller IP68 (10m) enclosure while supporting zero-downtime slide-on Wireless PowerPack charging
Full Hardware Specifications
| Processor / Edge SoC | Next-Gen Ultra-Low-Power Biometric Analog Front-End (AFE) & BLE Microcontroller (7% Smaller Footprint vs Gen 4) |
|---|---|
| AI Model Stack | WHOOP Coach Conversational LLM + Healthspan / Pace-of-Aging Model + FDA-Cleared AFib ECG Heart Screener |
| Display & Optics | Screenless Distraction-Free Brushed-Metal & Matte-Black Sensor Pod w/ Precision Haptic Wake Alarm |
| Camera & Vision | None (Zero-Camera / Zero-Microphone Biometric Privacy Architecture for Clinical, Pro-Sports & Secure Sites) |
| Measured Weight | 27.3g w/ SuperKnit Luxe Conductive ECG Clasp (34.7 × 24.0 × 10.6mm Pod / IP68 Waterproof to 10 Meters) |
| Battery & Runtime | 14+ Days Continuous 24/7 Telemetry per Charge + Slide-On Wireless PowerPack for Unbroken On-Wrist Charging |
| Connectivity & I/O | Bluetooth Low Energy (iOS & Android) + Continuous Background Sync ($359/yr WHOOP Life Membership Included) |
| Sensors & Acoustics | Built-In Single-Lead ECG Contact Pads + Multi-Wavelength Optical PPG (HR, HRV, SpO2, Overnight BP) + Skin Temp + 3D IMU |
⚖️ Side-by-Side Comparison: WHOOP MG 27.3g Medical-Grade On-Demand ECG, Blood Pressure Insights & 14-Day AI Longevity Band vs. AI Wearables & Audio Peers
Direct specification comparison against leading competing devices in the AI Wearables & Audio category.
| Specification | WHOOP MG 27.3g Medical-Grade On-Demand ECG, Blood Pressure Insights & 14-Day AI Longevity Band (Current) | PLAUD NotePin Pro Magnetic AI Memory Capsule → | Limitless Pendant 2 All-Day AI Clasp → | Omi DevKit 2 (Open-Source nRF5340 AI Necklace) → |
|---|---|---|---|---|
| Brand | WHOOP | PLAUD.AI | Limitless | Based Hardware |
| Retail Price | $359 | $179 | $129 | $89 |
| Editorial Rating | ||||
| Edge SoC | Next-Gen Ultra-Low-Power Biometric Analog Front-End (AFE) & BLE Microcontroller (7% Smaller Footprint vs Gen 4) | Custom Dual-Core Noise-Canceling DSP + BLE 6.0 SoC | ARM Cortex-M55 + Ethos-U55 microNPU | Nordic nRF5340 Dual Arm Cortex-M33 |
| AI Model Stack | WHOOP Coach Conversational LLM + Healthspan / Pace-of-Aging Model + FDA-Cleared AFib ECG Heart Screener | Whisper-Large-v3 + Claude 4 / GPT-4o | Limitless Cloud Memory Engine | Custom Webhook / Local Whisper + Llama |
| Display / Optics | Screenless Distraction-Free Brushed-Metal & Matte-Black Sensor Pod w/ Precision Haptic Wake Alarm | Micro-perforated status LED + Linear haptic motor | Privacy Recording Status LED | Screenless + Programmable RGB Ring |
| Camera | None (Zero-Camera / Zero-Microphone Biometric Privacy Architecture for Clinical, Pro-Sports & Secure Sites) | None | None | Optional OpenMV Camera Hat |
| Weight | 27.3g w/ SuperKnit Luxe Conductive ECG Clasp (34.7 × 24.0 × 10.6mm Pod / IP68 Waterproof to 10 Meters) | 22.0g | 17.5g | 14.5g |
| Battery | 14+ Days Continuous 24/7 Telemetry per Charge + Slide-On Wireless PowerPack for Unbroken On-Wrist Charging | 24h continuous recording / 45-day standby | 100 hours active recording | 32h Continuous Opus Streaming |
📚 Related Engineering Teardowns & Reviews
Browse All 158 Articles →WHOOP MG (27.3g On-Demand ECG, Blood Pressure Insights & 14-Day AI) vs Muse S Athena ($475 41g 4-Ch EEG + 5-Optode fNIRS Brain Headband) vs Circular Ring 2 Comparison: Cardiovascular vs Cortical AI
A technical electrophysiological-ECG, cuff-calibrated blood-pressure, and cortical fNIRS+EEG comparison of the WHOOP MG ($359/yr Life tier, 27.3g IP68 screenless biometric strap with conductive-clasp single-lead ECG AFib screening, overnight Blood Pressure Insights, Healthspan AI, and 14+ day Wireless PowerPack battery), Muse S Athena ($474.99, 41g fabric headband combining 256Hz 4-channel EEG with 64Hz 5-optode fNIRS prefrontal oxygenation sensing), and Circular Ring 2 ($349).
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