Lighted Christmas window :The Christmas bell/tree/star window lights with suction cup, total 60 warm white LED bulbs, no harm to the wall, you can place the illuminated Christmas window decorations wherever you like to brighten up your Christmas night for your family. TIMER FUNCTION The timer function that automatically turns on for 6 hours and turns off for 18 hours saves energy, and you don't need to set it up every day. The built-in timer function automatically activates when you turn on the light. Battery operation : Powered by 3 AAA batteries (not included), low consumption, to replace batteries, simply slide the battery door onto the suction hook and match the polarity in the battery compartment. Easy to use. :The window decoration light comes with a suction cup, which can be easily installed on the glass, gates, cabinets, etc., and the height can be adjusted according to the fixed position and press the ON/OFF button of the battery compartment to turn on/off the lights