Solar Power: Solar powered string lights provide energy-efficient lighting for outdoor spaces. Versatile Lighting: 25ft string lights come with 26 LED bulbs and 25 sockets for versatile lighting options. Dusk to Dawn: Photocell light sensor turns the bulbs on at night and shuts them off during the day. Easy Installation: No hardwiring required, just push the stake into the ground or mount the bracket on any wall. 4 Lighting Modes: Choose from steady or twinkle lighting effects with the touch button back panel.