Dolucky Outdoor String Lights, 2 Modes 55 feet 150 LED Durable Solar String Lights for Garden Decoration (Copper Wire, White) Flexible and Durable: The wire is made of extra thin and durable copper, which makes the string lights easy to build in any shape you want. Safe To Use: The copper wire stays cool even after 10 hours of working time, can be safely touched. Ultra Bright: The string lights comes with 150 ultra bright LED light bulbs and 55 ft long, have 8 lighting mode. Waterproof: IP65 waterproof level makes the string lights be able to handle multiple situations from bad weathers like Snowy and Rainy days. High Efficiency and Energy Saving: No external power supply required; The battery can get fully charged by the sunlight in 8 hours and last for 10 hours.