Bluetooth: BT5.1 Appearance material: zinc alloy Screen size: 1.52 HD screen Charging time: 3hours Usage time:3-10 days Battery capacity: 270mAh Waterproof: IPX67 Memory: 128MB APP software: RDFit Resolution: 360 * 360 Charging mode: wireless charging Support version: Android 5.0 and above, IOS