Our product Lei does not need any electricity. Only using the heat of the candle to generate the power to rotate the fan and spread the scent. Gently spreading the scent in the room is one of the feature of Lei. It won’t spread the strong scent in short period of time like other types of aroma diffuser such as Nebulizer or ultrasound. You will be enjoying the dance of the candle, calmly rotating fan and the scent that gently spread and hug the space you’re in.