Xiaomi Mi Smart Band 6 – 1.56” AMOLED Touch Screen, SPO2, Sleep Breathing Tracking, 5ATM Water Resistant, 14 Days Battery Life, 30 Sports Mode, Fitness, Steps, Sleep, Heart Rate Monitor 1.56 inch (3.96 cm) AMOLED touch colour display 5 ATM water resistance Bluetooth 5.0 BLE compatible from Android 5.0 / iOS 10.0 Active and sleep ysis available in the Mi Fit app Up to 14 days of battery life (125 mAh)