Product description 3 Christmas Indoor Window Light Decoration Packs, Backdrop String Lights for Outdoor Indoor Home Bedroom Wedding Party Holiday Wall, 1 Polaris, 2 Stars, Warm White 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. A light only needs 3 batteries AAA (not included). Before use, please make sure the installation location is clean. You can add appropriate water to increase the grip of the suction cup. Specification: Color: warm white Size: 7.5 inches LED quantity: 30 LEDs Operation: battery box The package includes: 3 x 10 Indoor LED Christmas Window Lights (1 Polaris, 2 stars) Warming tips: Manual measurement, please allow slight size difference. A risk of winding up may exist, please keep away from children Before use, you should make sure that the installation location is clean. You can add appropriate water to increase the grip of the suction cup.