Amir Solar String Light, 150 LED Christmas Lights, 51 Feet Solar Christmas Lights, Starry String Light Copper Wire Lights Ambiance Lighting for Christmas Party, Indoor/Outdoor Decoration (Warm White) 150 LEDs on a 51 ft long Copper wire string. Power Source: Solar powered, no need to replace battery. 2 Working Modes: Steady and Flash. Auto on at night / Auto off at sunrise Easy to Shape: Flexible Copper wiring can be easily designed into many shapes; wrap around tree trunks or gazebos;After dark,the wire fades to invisible, leaving only the bright lights.