- Introducing the Waterproof Smart Band 8 from Xiaomi, the perfect addition to any fitness enthusiast's arsenal! With its 1.62" AMOLED display and Bluetooth 5.1 BLE Connectivity, this state-of-the-art smart bracelet offers an uncompromising selection of features, making it extremely user-friendly and intuitive. It is equipped with a 190mAh battery, offering up to 16 days of battery life and only requiring 1 hour of charging time. With its 5 ATM water resistance up to 50m, you can take the Waterproof Smart Band 8 with you to the pool or ocean without any worry.