Perfect Decoration: Our wine bottle lights are flexible and sturdy, can be easily designed to any DIY shape you like, suitable party, wedding, barbecue, Halloween, Christmas, square, garden, indoor and outdoor decorations, etc. Battery Powered: Battery operated cork bottle light powered by 3 x LR44 batteries ( batteries already Installed, keep lighting at least 72 hours). There is a screwdriver in the package for changing the batteries when the batteries are no power. Universal Cork Size: cork lights’ size fits most bottles, cork diameter is 0.65 inch to 0.9 inch, you can use them for liquid bottles, wine bottles, whiskey bottles, beer bottles and other bottles. Low Voltage & Waterproof Wire: Low voltage & heat insulated copper wire make it not overheat after usage, safe to touch. Wires and leds are waterproof so it is feasible to decor the wine bottles. (Battery case is not waterproof) Package includes: 6 x cork light, each length: 2m / 6.5 feet, total LED bulb: 20LED, distance between each LED bulb: 10 cm / 3.9 inches.