1. Size: 8*5.3*3cm
2. Weight: 83g
3. Battery capacity: 400 mAh
4. Charging current: 200 mA
5. Charging time: about 2.5h
6. Standby time: about 240 minutes
7. Charging mode: USB
8. Small size, easy to carry
9. IPX7 class safety waterproof function
10. Food grade silica gel material, does not damage the skin surface, feel smoother