- Power supply: chargeable battery, standard voltage: 3.7 V, capacity: 2200 mAh, with protection for over voltage, overcurrent and short-circuits. - Power adaptor: AC (100~240)V (50~60)Hz. - Input power: 10 VA. - Output power: DC 5V/1A. - LED light feature: 3W blue LED light. - Wave length: 420nm~480nm. - Class: Ⅰ class. - Accessible emission limit (AEL): 3.9 x 10J. - Checking: LED light is working when correctly operate. - Working condition: Environment temperature: +5℃ ~ + 40℃. - Relative humidity: ≤80%. - Atmosphere pressure: 75kPa to 106kPa. - Made in China. **For further product information, please contact Chat Support**