WHOOP 4.0 fitness band

WHOOP 4.0 fitness trackers. Includes Onyx Superknit band and battery pack. Brand new. Sealed. The WHOOP 4.0 is a screen-free, subscription-based fitness tracker designed to continuously monitor your body’s health, sleep, and physical strain. Unlike traditional smartwatches, it does not send notifications or count steps as its primary function; instead, it focuses heavily on recovery and performance optimization.