Vickerman 50 Light LED Battery Operated Multi-color Wide Angle Christmas Light set featuring Green Wire, (Red/Green/Blue/Amber/Purple/Pink/Warm White) 24 gauge Wire, 12" Lead 5" Spacing, Multi Function Battery Box W/Timer (4/6/8Hrs On) And Photo Sensor Press Button, which means the lights will come one at dusk and turn off at dawn, Requires 2 C Batteries (Batteries Not included) Using 4hrs on; 20hrs off timer - good quality battery life is expected to last for up to 20days - Using 6hrs on; 18hrs off timer - good quality battery life is expected to last for up to 16 days -Using 8hrs on; 16hrs off timer- good quality battery life is expeced to last up to 13 days. 20' long. For indoor use only.