Battery Operated and More Economical: Each wine cork string light is powered by 3 x LR44 batteries (batteries included) and you don't need to plug it in, making it convenient to use. The silver wire is waterproof, but the battery is not waterproof. Continuous lighting can last for 12 hours if it only lights up for a certain period within 24 hours or more. Easy to Use and Install: Each cork has an on/off switch. Easy to turn on and off. Our bottle lights can be easily inserted into the top of the wine bottle. You don't need to drill a hole in the bottle. Just turn on the lights and enjoy these amazing bright string lights. A New Way to Recycle Bottles with Romance: 20 super bright LED lights on a 2m long and thin silver wire. The low heat emission and environmentally friendly design. Nice beautiful bottle cork string lights can create a romantic, peaceful, and warm atmosphere after decoration. Enjoy DIY Fun and for Many Occasions: Made of high-quality ultra-thin silver wire, better than ordinary copper wire, these battery-operated wine bottle lights can easily be used for any DIY shape you want. Suitable for parties, weddings, BBQs, Halloween, Christmas, squares, gardens, indoor and outdoor decoration, etc. It is also a great gift for your children, friends, and families. Note: Please remove the insulation film first before use. Use a screwdriver to open the battery compartment before replacing the new batteries. Only the wire is waterproof, the cork is not, so keep it away from water. Wine bottle string lights are a creative idea for any decorative project, but do not use them as primary lighting.