USB Power String Light Product Features: Powered by any 5V USB devices, no extra electric wiring required. Waterproof IP65, suitable for indoor or outdoor using.Specification:Voltage: 5V Bulbs Per Set: (39Ft/12M-100 LED Bulbs)Cable Length: 39FT/12M（Includes 6FT/2M USB Plug Lead Cable）Bulbs Bead Distance: 3.9IN/10CM Bulbs Color: White Working Environment:Indoor/outdoor Decorative Plug: USB plug Cable：Dark green cable 8 Light Effect: 1.Combination 2.In wave 3.Sequential 4.Slo Glo 5.Chasing/Flash 6.Slow fade 7.Twinkle/Flash 8.Steady on - These lights will last a long time and you don't need to keep on buying new ones year after year. - These lights wil not overheat and you can leave them on for days. - Anti-cold and waterproof: Fill the LED lights with antifreeze as a protection against frost. Ideal for outdoor decor, it will work properly even though in cold winter. - These are very easy to use and install. Just plug them in and they are ready to dazzle. - You can use them anywhere, outdoor and indoors both. - These are very flexible and can take almost any shape. So, you can put them any where. For eg. you can put them in the windows, doors, fences, trees, shops etc. Notice 1. Please kindly notice that the string light could not be extended or connected together; 2. Only the string lights are waterproof. The remote controller and the connecter are not waterproof. Please keep the connection slots away from water or high moistrue circumstances to avoid unexpected black-outs. What's in the box 1 x USB Power String Lights 1 x Adapter