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Specifications
As published on whoop.com, checked September 6, 2026.
Size and design
- Form factor
- Screen-free sensor with no display; worn on the wrist in a band, on the upper arm with the Bicep Band, or off-wrist in WHOOP Body Smart Apparel via the Any-Wear Pod
- Band included
- Titanium SuperKnit Luxe bandWith WHOOP Life; One includes a Jet Black CoreKnit band, Peak an Onyx SuperKnit band
- Band options
- Meridian, SportFlex, LeatherLuxe, SuperKnit, SuperKnit Luxe, CloudKnit, Navigator, Bicep Band
Battery and power
- Battery life
- 14+ days
- Charger included
- Wireless PowerPackWith Life and Peak; One includes the Basic Charger (wired)
- PowerPack charging
- Slides onto the device and charges it while worn; 0 to 100% in 2 hoursWaterproof; stops automatically at 100%
- PowerPack standby
- Holds power for up to a month once fully charged
Sensors and navigation
- Heart signals
- Resting heart rate, heart rate variability, blood oxygen, respiratory rate and the heart's electrical rhythm, monitored around the clock against a personal baseline
- Heart Screener (ECG)
- On-demand ECG from the wrist; FDA-cleared, medical-grade; detects potential signs of AFibStart a reading in the app, then place thumb and index finger on the sides of the clasp. Not for users under 22 or with known arrhythmias other than AFib; not recommended with pacemakers, ICDs or other implanted electronic devices
- AFib detection
- On-demand AFib DetectionWHOOP Life only; ECG results can be shared with a healthcare provider
- Blood Pressure Insights
- Automatic estimated systolic and diastolic ranges from thousands of overnight biometric data pointsPatent-pending; not a medical device; not intended for use during pregnancy or on blood pressure medication
- Sleep tracking
- Four sleep stages (slow wave, REM, light, awake), wake events, efficiency and respiratory rate; sleep need from sleep debt, strain and naps
- Activity
- Steps and activity monitoring with automatic activity detection; VO2 Max and heart rate zones
- Stress
- Real-time Stress MonitorPeak and Life
Processing and software
- Scores
- Recovery, Sleep and Strain scores; Health Monitor with health alerts; Healthspan with WHOOP Age and Pace of Aging
- Women's health
- Women's Hormonal Insights: cycle tracking, symptom logging, pregnancy guidanceEstimates only; not for conception or contraception
Compatibility
- Membership
- Required; WHOOP Life at $359 a year includes the MG deviceMembership starts when the device ships
- App
- WHOOP App included with every membership
Performance
- Heart rate accuracy
- Over 99% heart rate and HRV tracking accuracy
In the box
- WHOOP MG device
- 1WHOOP Life membership
- Wireless PowerPack
- 1Waterproof
- SuperKnit Luxe band
- 1Titanium
- USB-C cable
- 1USB C to USB C, supplied with the Wireless PowerPack
Consumables and upkeep
- Replacement Wireless PowerPack
- $49Optional; shop.whoop.com, HSA/FSA eligible
Warranty, returns and shipping
- Warranty
- Lifetime warranty for the duration of an active membershipDevice replaced for any issues if purchased directly from WHOOP; terms and conditions apply
- Returns
- 30 days from receipt: cancel the membership and return the device for a full refund minus the cost of shipping, for any reason
- Shipping
- Sales tax and shipping charges added at checkoutMembership shipping cost not shown on the page; the accessories shop ships free on orders over $75
- Feature availability
- ECG available in the United States; WHOOP Advanced Labs United States onlyIrregular Heart Rhythm Notifications are listed for other regions and not for the United States
- Age limits
- Healthspan 18+; ECG and AFib features 22+
Memberships and pricing
- WHOOP One
- $199/yrWHOOP 5.0 device, Basic Charger (wired), CoreKnit Jet Black band; sleep, strain and recovery insights, coaching, VO2 Max and heart rate zones, Women's Hormonal Insights, Natural Cycles integration
- WHOOP Peak
- $239/yrWHOOP 5.0 device, Wireless PowerPack, SuperKnit band; everything on One plus Healthspan and Pace of Aging, Health Monitor with health alerts, real-time Stress Monitor
- WHOOP Life
- $359/yrWHOOP MG device, Wireless PowerPack, SuperKnit Luxe band; everything on Peak plus Blood Pressure Insights, Heart Screener with ECG, On-demand AFib Detection, priority phone support; 12-month membership