The uyuni candles have a gently flickering led light to go along with the wax base. All the ambiance of a candlelit space, without any of the harmful chemicals that are released by regular wax candle use. Patented 3d flame, built-in 6hr timeroptional remote* features (4x timer options: 4, 6, 8 & 10hrs* and 3 position dimmer switch) *remote sold seperately