WHOOP 4.0 Fitness & Health Tracker (Onyx SuperKnit Band)

Optimize your daily performance, recovery, and sleep with the advanced WHOOP 4.0 system. Designed for continuous tracking without a distracting screen, this sleek fitness and health wearable delivers deep insights into your body's vital signs 24/7.

Key Features & What's Included

• Hardware & Sensor Module: Continuous monitoring of heart rate, skin temperature, blood oxygen levels, and daily strain.

• Onyx SuperKnit Band: Durable, water-resistant, and ultra-comfortable fabric strap designed for all-day wear and intense workouts.

• Rechargeable Battery Pack: Slide-on, waterproof battery pack allows you to charge your device on the go without ever taking it off.

• Setup Guide & Documentation: Includes physical instructions for quick pairing and app integration.

Product Specifications

• Model: WHOOP 4.0

• Band Color: Onyx

• Connectivity: Bluetooth low energy sync with the WHOOP mobile app

• Design: Screenless, low-profile form factor optimized for sleep tracking and athletic training