The LED candle gives a cosy flickering light like a real candle. It is a safe alternative for homes with children, and can be used as a decorative light anywhere without the risk of fire.The LED light source consumes up to 85% less energy and lasts 10 times longer than incandescent bulbs.Batteries are sold separately. IKEA recommends PLATTBOJ lithium battery CR2032 3V (6 pcs). 6 pcs required.PLATTBOJ lithium batteries CR2032 3V give 70 hours of light. It will last approx. 12 days if used 6 hours per day.