Product information: Resolution: 4K Specification size: Blue and White Material: ABS Size: 75.8mm * 37.6mm * 19mm Battery Type: polymer battery Battery Service life: 5 days (h) Waterproof function: IPX6 External Power Supply form: magnetic charging Resolution: 4K Operating voltage range: DC 3. 4V-4.5V Working status voltage/current: 4V/average Built-in battery capacity: 700 mAh