【DIY wine bottle(Bottle not Included)】 Putting them in a glass bottle is like a firefly in a bottle and a star in a bottle. It is very beautiful and romantic and You will love them.Fits openings as narrow as 1/2 inch and as large as 1 inch 【Waterproof String Lights】These decorative lights reach IP67 and can be immersed into water with stable vivid lights provided (the cork is not waterproof). Made of high-quality ultra thin silver wire, can be easily designed to any DIY shape you like, like a letter, a star… holiday lighting for Father’s Day, Flag Day, Halloween, Christmas. 【Easy to Use and Install】 Each cork with a ON/OFF switch. Easy to turn on and off switch. (turn it off when you don’t need them) 【Battery Powered and More Saving】 Every wine bottle cork lights are powered by 3 PCS LR44 batteries (Batteries included) and no need to power socket and convenient.Up to 48 hours of use and brighter than 10LED. 【Package&quality 】24 X Artificial cork lights for wine bottles, 12 extra batteries. We offer 1-Year quality.Please contact the seller directly if you have any quality problems!