XIHADA Wine Bottle Lights with Cork, 20 LED Battery Operated Fairy String Lights Mini Copper Wire Bottle Lights for DIY, Party,Decor,Christmas,Thanksgiving Day,Wedding (10 Packs, Warmwhite). works good. very easy to use. simply pull the tab out to connect the pre-installed batteries and turn it on. Uncoil the light string to push it into the bottle, and enjoy your new decorative light. #Viralix #Xihada #XIAMEN XIHADA