Suction Cup Design: Installation is a breeze with no need for drilling; effortlessly affix to glass, ceramic tiles, windows, rooms, walls, shelves, and more. Long-lasting Usage: Featuring a cold light source that minimizes heat emission, ensuring an extended lifespan. Power Supply: Operates on 3 AAA batteries (batteries not included). Great Christmas Decoration: Enhance the festive ambiance on Christmas trees, walls, windows, curtains, doors, floors, ceilings, grass, and fences. Specifications: Input Voltage: 3 (V) Number of LED Lamp Beads: 10 Luminous Flux: 2 (lm) Color Temperature: 3000 (K) Battery Type: 3* AAA battery Continuous Lighting Time: 20-30 hours Occasion: Christmas Color: Warm White Shape: Star Size: 18.518cm / 7.287.09 inches Switch Button: 7cm / 2.76 inches Power Line Length: 21.5cm / 8.46 inches Package Includes: 1/2/3 × Christmas String Light with Suction Cup