I also have a 4.0 that’s been worn for about 2 days.
The Whoop Peak 5.0 Health and Fitness Wearable is a versatile activity tracker designed for indoor and outdoor use. It features a high-resolution display with a resolution of 1920 x 1080, and provides accurate heart rate measurements. This sleek black device, powered by batteries, has a battery life of up to 5 days and is compatible with both iOS and Android operating systems. The Whoop Peak 5.0 tracks various activities such as gym training, swimming, yoga, and running, making it a great tool for fitness enthusiasts looking to monitor their progress.