You can remotely control the candle and projection effects. Candle light is operated by 3 AA batteries (not included). Environmental Protection:Environmentally friendly and safety material, the same feel and look with real traditional candle,without any messy dripping wax and any fire hazards. Function: 2-in-1, can be used alone as candle light, can also be used as a projection lamp, can switch between candle light and projection function. LED candles with projection mode: It can be widely applied for birthday, Christmas, home decoration, bars, hotels, parties, holidays, wedding, or other occasions.