Luminara is the most recognizable brand of flameless candles because it is the best! I set mine to light at 6:00 p.m and have 5 hours of continuous light. After 5 hours they go off automatically. Then back on the next night at 6:00. Runs on "C" batteries and they tend to last 4-5 months or a "Holiday Season!" Size is 3"L x 3"W x 8.5"H.