Convenient and easy to use, since the built-in timer automatically turns on the light at the same time every day and then makes it shine for 6 hours.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 sold separately, 8 pcs AA required.Only for indoor use.IKEA recommend LADDA rechargeable batteries.New, fully-charged LADDA AA 2450 mAh rechargeable batteries give 100 hours of light. One charging will last approx. 17 days if used 6 hours per day.Built-in LED light source.LED life time approx. 20.000 hours.Light colour; warm white (2500K Kelvin).The built-in timer is pre-set for the light to stay on for 6 hours. It will then automatically turn off for 18 hours before it turns back on again.