This is a 3-Piece set that uses real wax. The candles measure 4", 5", and 6". This set also uses a remote control w/18 buttons that control the color, flicker rate, 4 or 8 hour timer, and automatically turn all 3 candles off with the push of one button. Because of the real wax, this candle provides a clean, wind-resistant, safe, and is environmentally friendly compared to regular candles while still allowing the enjoyment of the beauty, aroma, and ambiance that comes with using real wax candles. This set also comes with a free Pull-a-Part Key Tag in the box. Requires 3 AAA batteries, not included.