Power supply:rechargeable lithium battery. Battery voltage and capacity:3.7V/1400MAH. Battery have protection against over-voltage, over-current and short circuit. Power input:100v to 240v.The item "FDA Metal Head Dental Wireless i Led 1 Second Curing Light Lamp 2300 mwithcm2" is in sale since Friday, March 16, 2018. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Handpieces & Instruments\Dental Curing Lights". The seller is "hismile2017" and is located in California. This item can be shipped worldwide.