This 'candle' is actually an LED light that simulates the feel of candlelight through a flickering effect. The candle body is made from plastic but is covered with a waxy coating to give it more of a realistic candle-like feel. These candles are similar to the Flameless Wax Candle with one major difference - they actually turn off when you blow on them. By responding to the puff of air caused by blowing on them, the LED turns off and conversely, also turns on when you blow on it in the off state. They have a master switch on the bottom to enable this functionality. The candles run on 2 AA batteries that can last up to 300 hours. Dimensions: diameter - 3 inches, height - 4, 5 or 6 inches.