WHOOP Life MG Sensor Fitness Tracker

WHOOP MG is our most advanced sensor to date—purpose-built for members in WHOOP Life who want medical-grade insights in a wearable form. With exclusive ECG capabilities, a refined design, and support for WHOOP Body apparel, WHOOP MG redefines what’s possible in continuous health tracking. This article covers what makes WHOOP MG unique, how to use it correctly, and how to get the most accurate data.

WHOOP MG features a compact yet powerful design that’s 7% smaller than WHOOP 4.0, with a matte black finish and brushed metal detailing. It weighs slightly more than WHOOP 5.0 (~27.3 g), due to the conductive clasp required for ECG signal acquisition.

ECG-enabled bands and compatibility

To unlock ECG functionality, WHOOP MG must be paired with a band that includes a conductive clasp—like the SuperKnit Luxe. While other WHOOP 5.0 bands will physically fit the device, they will disable ECG-based features.

WHOOP Body apparel

WHOOP MG is fully compatible with the new WHOOP Body apparel, enabling discreet, off-wrist wear during workouts, daily life, and sleep. Sensor-integrated garments include special sleeves or pockets for securely mounting the device using Any-Wear™ Pods.

Compatible apparel types:

Training Wear: Shirts, shorts, and sports bras with waistband or chest pockets

Intimates: Bralettes and boxers with sensor placement in inner bands

Accessories: Arm Sleeve, Impact Sleeve, and HydroSleeve for bicep or wrist wear

Fit and accuracy notes:

Garments must fit snugly to maintain accurate contact.

Loose clothing can introduce motion artifacts or data gaps.

WHOOP recommends wrist wear when ECG readings or high precision is needed.