Product Description Name: Haylou LS05S (Haylou RT) Brand: Xiaomi Youpin Haylou Language: English, Chinese, Korean, German, Spanish, Turkish, Russian Model: 2021 Newest Material: Stainless Steel Upper Body Design Dimensions(L*W*H)mm: 45*51.16*12.2 Weight: 50.4g Bluetooth Version: Bluetooth 5.0 Display: 1.28inch TFT LCD Screen Resolution: 240*240 Pixels Battery Life: 300mAh, Up to 20 Days Use for Basic Use, 10 Days for Heavy use. Charging Time: ≤2.5H Charging Method: Magnetic Adsorption Charging Waterproof: IP68 Type: On Wrist, Wearable Style: Fashion, Sport, Business Sensor: Dynamic Optional Heart Rate Sensor, Acceleration Sensor System: Compatible with Android and IOS phones, could be suitable for Apple iPhone, Samsung Phones, Huawei, Xiaomi, Oppo, Vivo, Realme, Oneplus Phones. Features: Could be used as a smartwatch, all day acitivity tracker and fitness tracker, fitness band and smart bracelet. Features as following: sleep tracker, message reminder, call reminder, cannot answer call or dail call on smart watch but could refuse phone on your watch, push message, heart rate tracker, interactive music, calendar, 24 hour instruction, alarm clock Up to 20 Days Battery Life With deeply optimized system battery management, the watch is always ready to track your progress and escort you on your journeys without the need to worry about carrying a charger everywhere. The basic use for pedometer, distance and time could last for 20 days. With heart rate monitoring on, it could support up to 10 days. More than a Fitness Band Equipped with the latest high-precision optical sensors, Haylou LS05S watch truly realizes all-round health protection by tracking your all day activity, sleep, heart rate and more. More Smart Features With always on display, it could receive texts and refuse calls from your phone. It could also make your phone ring to help you find the cellphone.