Household Rechargeable Intelligent Electronic Head White Noise Sleep Instrument Acupuncture Physical Therapy Massage Machine (Pink)

1. Charging input voltage and current: 50?±02V 180mA?±30mA
2. Charging time: 1-2 hours
3. Built-in battery specifications: 200mAh / 3.7V
4. Length of use: about 20 times,15 points/time
5. Charging output interface: standard V8 interface
6. Machine size: 145x50x38mm
6. Net weight of the whole machine: 52g