KCRIUS(TM) Mini Battery Operated LED Taper Candles with Timer - Amber Flickering LED, Set of 12 Dipped Candles with Drip Detail & Timer - Amber Flickering Flame Each candle measures 6.25" x .875" Each Candle uses 2 x AA Batteries (not included) - lasts up to 500 hours Candle powers on by tightening the cap on bottom of the candle Timer for 6 hours lighting, 18 hours later it will automatic lit for 6 hours and then again before the battery's over.