Product Specifications: Power Source: Internal Battery Pack Batteries: 2x LR44/AG13 Type (Included) Color: Cool White. Cork Only Dimensions: Top: 2.9cm, Length: 3.5cm, Bottom: 1.5cm (Requires bottles to have an opening of at least 1.9cm wide) Wire Length: 56-Inches. LED Lights: 15 Lights. Light spacing: 4 inches. Waterproof?: Fairy Light is waterproof but cork portion is not. What's Included?: 1x LED Fairy Light Cork Stopper. Bottle not included. *Designed to Fit Most Bottles -Recommend bottles to have an opening of at least 1.9cm.