Unique Design: 20ft, 40 LED lights, blue snowflake, PVC waterproof material; There are two modes of switch: Twinkle/Flash and Steady On; It will brighten up the dark corner for a happy atmosphere indoors or outdoors Battery Operated: Each string lights are powered by 3 x AA batteries (Not included), with no plug and extension cord needed, you can put it anywhere even without an outlet; It has Low heat and power consumption Safety And Flexible Decoration: LED string light that is not overheated and safe; After hours of use, it will not get hot even if you touch it; These LED string lights are flexible and bendable, easily bent into any shape you want; Use it creatively with DIY, can be used for bedroom, fence, table, tree, dorm, window curtain, etc Waterproof LED String Lights Indoor / Outdoor: IP44, which allows you to use the lights both indoors and outdoors; However the power and controller are non-waterproof, please protect them well when using outdoor Christmas Decoration: The Christmas Snowflake String lights can be applied both indoors and outdoors, like on Christmas trees, bedrooms, dormitories, bars, windows, fences, galleries, patios, porches, or pergolas, they can add a beautiful ambiance to any space; It can also be used on various occasions, Christmas, birthday, wedding, festival, graduation, Valentine, Fashion Show and so on