The A3 activity tracker helps you understand your health and listen to your body better. The ergonomic wristband made of TBU material feels soft and comfortable on the skin. The Kuura Activity Tracker A3 activity wristband helps you increase your activity and progress in exercise. Heart rate measurement allows you to monitor heart rate zones, blood pressure and oxygen uptake during exercise (Note: not suitable as medical indicators). With this waterproof activity bracelet, you can also easily monitor your daily calorie consumption. With sleep tracking, you know how much you sleep at night and what your sleep quality is. The activity bracelet also has a vibrating alarm function. Combined with the phone app, the activity strap vibrates for incoming messages, calls, and notifications. The activity strap allows you to control the music on your phone during your workout. Kuura activity wristband has a USB head that allows it to be easily charged on a computer or using a charging head. With