Using LED candles is so safe and easy! You will get a set of 12, flameless LED candle which flashes from red to blue to green and alternates between a slow, medium and fast flash. Simply use the on/off toggle switch on the bottom and you have instant color! Each candle has a hard white plastic outside with a flexible clear "flame" that turns colors when flipped to the "ON" position. 1.5" in diameter and 1.5" tall and takes 3 AG10 button cell batteries which are included.