Powered by sun, these string solar lights are incredibly power efficient. With solar panel staked to ground in direct, full sunlight, lights absorbs and converts sun's energy into electricity, utilizing advanced technology to charge battery and illuminate bulbs. Waterproof and sturdy, these mini string lights are perfect for outdoor use on your patio, apartment balcony, gazebo, trees and more. Dark green, flexible cable wires with high quality mini LED bulbs. Please note: Charge for a minimum of 6 hours in full sunlight. The lights will automatically light up as soon as it becomes dark and turn off when the sun is out. On/off switch must be activated. Solar powered; extremely energy efficient; solar panel and stake included Distance between each bulb: 4" Lead wire: 12" 200 LED measures 64'