Remote controllable, wireless Carolin Christmas tree candles in a set of four Real candles on the Christmas tree have a high risk of fire and need to be constantly supervised. An alternative is the use of battery-powered Christmas tree candles which don't need a cable and can therefore be placed anywhere on the tree. A remote control is included. AAA batteries are required. They are not included and can be ordered separately as accessories. With an integrated timer for two, four, six or eight hours of lighting as well as an on/off switch.