Philips 50ct. Warm White Solar LED Mini String Lights - Green Wire Total Cord Length: 22.5 ft L. Power Source: Solar-Powered. Charges even on cloudy days. Green Wire. Safety and Security Features: Safety On/Off Button. Built in automatic timer. Up to 25,000 hour bulb life. No utility electricity needed. Cool to the touch when lit. Durable and break resistant bulbs. Lighted length: 16.3 ft. Steady illuminating. Solafr panel with ground stake for easy positioning.