Romantic Bottle Lights: Special cork shape for DIY bottle lights. Create a romantic atmosphere, ideal for tables, rooms, patios, weddings, parties, Christmas, New Year's Eve, and other festive decorations. Universal Cork Shape: The cork fits most bottles. Cork diameter: 1.5 cm to 2.3 cm fits most wine bottles, whiskey bottles, beer bottles, and other bottles. Multi-Application Scenarios: These string lights are a great decorative accessory for indoor lighting - easily bent into any shape, ideal for DIY, Halloween, Christmas, Thanksgiving, parties, holidays, and wedding decorations. Safe Battery Operation: Powered by 3 LR44 batteries (including batteries), up to 30 hours of light can be provided by three new batteries. The best energy-saving string lights bring you a fascinating new world of lights.