Candle Choice Set of 6 Flameless Tealights/Tea Lights with Dual-Time, 400-hour Battery Life Build in 4-hour on/20-hour off and 8-hour on/16-hour off dual timers. You can set one of these two timers. The candles turn on and off automatically every day. For indoor and outdoor use. Can be used in hot weather/under the sun, but not designed for wet weather. No risk of fire, no fume and no wax mess Flickers like a real candle Unique Still-On technology to save energy consumption. Approx. 400 hours battery time, one of the longest battery life tealights you can find in the market.