Each votive will light up automatically every night for 3-4 months on one set of batteries. set of 4 battery operated metallic votive lights with 8 hour timer 8 hours on and 16 hours off then automatically on again at the starting time realistic flickering amber led lights in the "wick". each candle requires 4 aaa batteries (not included). a child safe, fire safe and reusable alternative to traditional votive candles. the round base is 1 3/4" in diameter; height is 3 1/2" to the top of the "flame". on/off switch located on the bottom of each votive.