Whoop 4.0 Fitness & Health Tracker

• The Whoop 4.0 is a wearable fitness tracker designed for continuous monitoring of physiological data. • It tracks heart rate, heart rate variability (HRV), sleep stages, respiratory rate, and skin temperature to provide insights into recovery and strain. • The device offers personalized recommendations for optimal training and rest based on your body's readiness. • Its battery life typically lasts 4-5 days on a single charge, with a convenient battery pack for on-the-go charging. • The Whoop 4.0 is water-resistant, suitable for swimming and showering. • This unit is in excellent condition and includes the charger/battery pack. • Compatible with iOS and Android devices via the Whoop app.