Battery powered and more saving: each wine cork light chain is powered by 3 x LR44 batteries (batteries included) and no need to plug in and convenient to use. The silver wire is waterproof and the battery is not waterproof. Continuous lighting can last12 hours if it can only light for a certain time for 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. No need to drill a hole in the bottle. Simply turn on the lights and enjoy these fantastic brightfairy lights A new way to recycle bottles with romance: 20 super bright LEDs bulbs on a 2 m long and thin sliver wire. The low heat emission and the environmentally friendly design. Nice beautiful bottle cork string lights could create romantic, peaceful and warmatmosphere after decoration. Enjoy DIY fun and for many occasions: made of high-quality ultra thin silver wire better than normal copper wire and this battery-powered wine bottle lights can easily be used to any DIY shape you like. Suitable for parties, weddings, barbecues, Halloween,Christmas, square, garden, indoor and outdoor decoration, etc. It is also a good gift for your children, friends and families Note:Please remove the insulation film first before use. Please use the screwdriver to open the battery compartment before changing the new batteries. Only the wire is waterproof, the cork is not, so please keep it away from water. Wine bottle fairy lightsare creative idea for any decorative project, but do not use as an illuminating light.