Style up your fitness with the Xiaomi Watch S1 Active. Seriously Stylish Stay classy while you exercise with the Xiaomi S1 Watch featuring a stylish display and sleek metal bezel. Beautiful Display The S1 Active comes with a beautiful 1.43-inch AMOLED sapphire glass display (326ppi) that’s ideal for fitness tracking and push notifications. Health Tracking The S1 Active tracks your heart rate and SpO2 24-hours of the day. You can get a measurement anytime anywhere, even while you sleep, for a peace of mind. The PPG sensor provides high-precision heart rate tracking and can send alerts when abnormal heart rate is detected. Other useful health tracking features include Stress Monitoring, Breathing Exercise, Activity Stats, as well as Female Health tracking. GPS The built-in GNSS chipset provides precise position tracking so you can leave your phone at home. The four major positioning system - GPS, GLONASS, Galileo, BDS are all supported, so you can track your route whatever you exercise in the world. 117 Fitness Modes Track your workout like an expert with 117 workout modes. Whatever your preferred form of fitness, the S1 Active has a workout mode for you. 5ATM Water Resistance 5ATM of water resistance provides up to 50m of water resistance, so you can wear the Xiaomi Watch S1 in the shower or take it swimming. Bluetooth Calling Built-in microphone and speaker so you can make calls directly from the watch. 12-Day Battery Life 12 days of ultra-long battery life, including 30 hours under continuous GPS mode or 24 days under battery saver mode. Depth: 28 CM Metal Bezel 1.43" AMOLED Display 24-hour heart rate and SpO2 tracking GPS,GLONASS, Galileo, BDS location tracking so you can leave your phone at home 117 Fitness Modes Up to 50m Water Resistance Bluetooth calling support 12 days of battery life under typical usage Height: 3.5 CM Width: 6.9 CM