CHRISTMAS WINDOW LIGHTS:The snowflake shaped Xmas window lights with suction cup, total 54 white LED bulbs, no harm to wall, You can place the lighted Christmas window lights ornaments wherever you want to brighten your Christmas night for your family. TIMER FUNCTION The timer function that automatically cycles on for 6 hours and off for 18 hours saves energy, and you don't have to set it up every day. The built-in timer function will automatically activate when you turn on the light. BATTERY OPERATED: Powered by 3 AAA batteries (NOT INCLUDED), Low consumption, for battery replacing, just slide out the battery door on suction cup hook and match the polarity in battery compartment. EASY TO USE : the window decoration light comes with a suction cup, which can be easily installed on glass, gates, cabinets, etc., and the height can be adjusted according to the fixed position and press the ON/OFF button on the battery compartment to turn on/off the lights (Lighting Mode: Steady on, Twinkling).make sure that the suction cup is clean before installation, adding appropriate water to increase the adhesion. WIDE APPLICATIONS: Christmas string lights decoration with hooks can be hung on door, porch, hallway, balcony, roof edge, bedroom, mantel, hearth, centerpiece, Christmas tree, garland, garland, railing, handrail, hallway, deck, patio, bar, Bistro, Cafe, Bar, Restaurant, Shopping Mall, Office, Private Car.