Solar Christmas Snowflake String Lights 100 LED 39 FT Outdoor Waterproof Fairy Lights with 8 Lighting Modes for Wedding, Party, Tree, Room, Garden, Patio, Yard, Home, Warm White

"Automatically open at night Just put the solar panel in a sufficient sunny place, light from the sun charges the battery, and at night, energy stored in the battery powers the LED lights.

No energy or electric costs.

Create a comfortable atmosphere They send out warm white light and create a pleasant atmosphere for courtyard, lawn and tent which will make your courtyard more fantastic"