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