Weve put the sun on a string. Hidden inside the expandable unit, Luci Solar String Lights pack 100 lumens into 10 nodes on an 18 ft cord. Along with mobile charging capabilities, this is the perfect way to light up your space. 18 ft cord in expandable unit Mobile charging 100 lumens Warm white LEDs Lasts up to 20 hours on a single charge (see details under “tech specs” below) Recharge via solar panel or quick charge via USBProduct features Expandable design 18 ft cord 100 lumens 20 warmwhite LEDs in 10 nodes Built-in LED external flashlight Hanging cord Built-in USB ports for recharging light and recharging mobile phones Durable Lightweight: 11.3 oz (320 g) Splash resistant Operating temp: 32F 113F (0C 45C)Product functions 4 modes: low, medium, high, external flashlight 2 second quick shut off Battery level indicatorBattery life Low: 20 hoursMedium: 11 hours High: 5 hours Flashing: 9 hoursCharge Recharge via solar or quick-charge with USB (16 ho