Mi Band 3 smart watch

Mi Band 3 Large OLED touchscreen Up to 20-days battery life.This Smart watch View App notifications, SMS, calls & more, Swim up to 50 meters deep,Track activity in real-time,Locate your phone,Monitor heart rate continuously,Water resistant up to 50 meters,Track steps & sleep quality.When you're too busy and lose track of time, the band will vibrate, reminding you to get up and take a walk,When you are close to your Android smartphone, it unlocks instantly, no pass code or fingerprint needed.The all-new Mi Band 3 displays the caller's name.If you don't want to answer, press and hold to reject the call.