Flame less， smokeless， environmental friendly， very safe to use.They convincingly mimic the behavior of fire burning candles.This is perfect for adding a touch of warmth and romance to the ambiance of the event.With the embedded sensor build in， you can simply turn it on/off by blowing or shaking!The Electronic LED candle can not only flicker like a real candlePower supply: 3x button cell (installed)Dimension of Candle Cup: 43 (Diameter)*91(H) mmDimension of Candle: 36(Diameter)*42(H)mm