★ Product description ★ These lights are not fully charged upon arrival, please put them under the sun for direct sun exposure to get fully charged. Make sure charged for no less than 6 hrs of direct sun light during the day. When you want to charge the string light, please make sure it’s on status. Then it will be charged automatically. Panel must be in dark/ dim environment to turn on the lights. The light will turn on automatically when the environment brightness is less than 10 Lux. ★ Basic parameters ★ Length: 23/39ft LED Quantity: 50/100 Color: Warm White/color Power source: Solar Powered Working Modes: Steady/Twinkling Charging time: 6-8 hours ★ Please note ★ 1.If you have any questions, please do not hesitate to contact us. 2.We are manually measuring, there may be 1-3cm error, please prevail in kind. 3.Our shop has a variety of styles , you can go to my store view. ★ BUY NOW by clicking the "Add to Cart Button", you won't be disappointed!