3 Sets Fairy String Lights Battery Operated 3.5ft 20 Leds LED Lights BAOSTARRY Starry String Lights Copper Wire For Christmas Weddings Parties Waterproof decorations Simple button cell power and heat insulated copper wire to ensure safe usage Powered by 2 x CR2032 batteries,Copper wire is waterproof CR2032 battery box is not waterproof Our batteries are tested to last for 40+ hours non-stop operating time,You can rest assured that use High-quality copper wire, easily bent into any shape you want for Christmas Wedding Indoor Outdoor Decorating All products has been tested and validated 100% Brand new and high quality