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 "Dental i Led Curing Light 1 Second Cure Lamp 2300mwithc White Color Vakker" is in sale since Friday, March 16, 2018. This item is in the category "Health & Beauty\Oral Care\Whitening". The seller is "shoppingmall0727" and is located in California. This item can be shipped worldwide.