Waterproof and Safety fairy lights(Batteries are not included) use 2 x AA batteries with 4.5V low voltage safety design, you don’t worry about children touch. Number of Lights 20 / 50 / 100 LED string lights is IP68 waterproof, it could be immersed into water, ideal for indoor and outdoor use. PLEASE ATTENTION: The battery box is not waterproof. Excellent flexibility & DIY consists of high-quality 2M / 5M / 10M Silver wires, which make it tough and sturdy, not easy to break apart. It is also very flexible and can be easily twisted into any shape, perfect for modeling. Low Energy Consumption, Easy to Carry The battery powered string lights are low energy consumption, More than double the working time of the light string of the general battery fairy lights. can be easily carried around due to its small size. (Batteries are not included). This Mini LED battery string lights perfect to use as wedding centerpiece, decorate party, Christmas, jars, vases, wine bottles, planting，Christmas trees and others, restaurant and kid's room, anywhere indoor or outdoor usage of lighting decorations and projects.