Specification: Product Name:LED Bottle Light Material: EVA foam/Glue/Electronic components Battery: 2 x Button battery(Built in) Size: Diameter of 6CM/2.36in, thickness 0.3CM/0.11in Product Weight: 60g Three Light Settings: steady mode, rapid flashing or slow flashing Package Included: 6 x LED Coasters There are 4 very important steps to use them correctly, otherwise products may NOT WORK!!! Firstly, Must TAKE OUT the insulation insert, then tear off the double-sided tape, stick them up to any normal bottle or drinking glass, and click the button to turn on. Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-2 mm differences due to manual measurement. High Quality Material: These LED coasters are made of acrylic material for durability. Environmentally friendly materials, non-toxic, safe to use. safe and environmentally friendly, creating a romantic and warm atmosphere. Super Brightness: Each sticker has 4 Ultra-high white brightness LED lights, which can make your clear containers such as wine bottles or glasses become bright and shine at once. Easy To Use: Just stick the LED coaster to any normal bottle or drinking glass,and click the button to turn on. Indoor or outdoor, easy to carry, can be widely used for your needs. Battery: Each cocktail coaster is with 2 CR1620 button batteries (installed in the product in advance). The battery can be used about 12 hours, which satisfies your need for the party. 3 modes: rapid flickering,slow flickering,steady mode, to meet your different needs.These Led Bottle Glorifier is great for Nightclubs, Bars, Restaurant, Home Bar.Weddings, Events and Party