Joomer Solar Christmas Lights 72ft x 2 Pack 200 LED 8 Modes Solar String Lights Waterproof Solar Fairy Lights for Christmas Decorations (Multicolor)Brand: Joomer Color: Multicolor Features: Solar Powered and Auto On Off: These multicolor solar Christmas lights use solar energy, eliminating extra electricity costs and battery replacements. The light sensor charges the lights by day and turns them on automatically at night 8 Modes and Memory Function: Use the On Off and mode buttons to select from 8 lighting modes. The built in memory chip saves your last mode setting, so you dont need to reset it