widely use: The string lights is flexible but sturdy, which is perfect for decorating house, bedroom or livingroom, for party, wedding, concert, Christmas, Halloween, both indoor and outdoor decorations.waterproof: Insulate copper wire and fully sealed LEDs, the part of copper wire is waterproof, the great lighting effects can be achieved perfectly. NOTICE: The battery box is NOT waterproof.operate easlly: With on/off switch, and 2 battery CR2032 (included), non-plug, the lights are easy to operate and safe. batteries could be easily changed with the screwdriver ( Included).MINI SIZE: The size of battery pack is only 0.75*2 in, which is easy to hide and won't reduce the beauty of decors.multicolor: Come with 7 different colors lights: 6 warm white, 2 pink, 2 red, 2 green, 2 blue, 2 purple and 2 cold white.Excellent after-sales service:We offer you 30 days no-hassle-return policy and technical after-sales service.