Bluetooth Version: Bluetooth 4.2 Notification: Yes Color: Random Groups of alarm: 1 Screen: OLED Operating mode: Touch Key Type of battery: Lithium-ion polymer battery Battery Capacity: 230mAh Charging Time: About 2 hours Case material: ABS, PC Band material: TPU Support: Android 4.3 or above and iOS 8.0 or above Dial size: 4.8 x 2.5 x 1.3 cm Band size: 24 x 1.8 cm Waterproof Grade: Life Waterproof Model: S908
