Screen size: 1.4 inch Resolution: 240* 240 Bluetooth version: 4.2 Battery capacity: 170mAh Waterproof rating: IPX7 Charging time: approximately 2.5h Battery life: 5-7 days Standby time: 25 days Material: Silicone + Stainless steel Wristband length: 22.5 cm Compatibility: Android 5.1 +, iOS 8.0 +
