Display and Design 0.95" AMOLED Color Display 120*240 Pixels Screen brightness up to 450 nits 2.5D tempered glass Battery 135mAh battery capacity Up to 20 days Recharging time ~2 hours Water Resistance 5 ATM water resistant up to 50m Activity Tracking Count steps, distance, calories burned 6 Workout Modes: Treadmill, Exercise, Outdoor Running, Cycling, Walking, Swimming Health Monitoring 24/7 Heart rate monitoring Heart rate alerts Sleep monitoring Idle alerts Connective Bluetooth 5.0 System Requirement Android 4.4, iOS 9 and above Other Features Alarm clock Timer Find phone Event reminder DND mode Music controls on band