High Quality Material: 20pcs of each set, each of them is 3mm, made of laminated foam profiled sheet. It is flat and stable to use, will definitely add atmosphere at your happy moments. APPLICABLE SCENES: The round LED coasters can meet your needs in various occasions, such as parties, dating, family reunions, annual company gatherings, KTV, bars, cafes, disco clubs, slow clubs, leisure clubs, clubs, parks, gardens, restaurants etc. Acrylic Coasters for Drinks - Each of them is 6 cm. Made of Acrylic material, flat, stable,light weight and durable. The battery panel were embedded in the LED coasters panel, do not wash/ soak the LED coasters in water directly. Tips: Clean with wet wet duster cloth Widely Application - LED atmosphere lights and beverage glass bottle coasters can meet your needs in various occasions such as parties, weddings, dating, Halloween, Christmas, bars, disco clubs, indoor and outdoor decorations, etc. Easy to carry, can be widely used for your needs.You can choose one of the 3 modes you like according to the scene or mood. Enough Working Time: Each product is with 2 CR1220 button batteries (installed in the product already). In a very bright state, it will last for about 2 hours, and then it will gradually darken until it is not bright. and you can replace the battery by yourself to let it work longer.

ENOUGH WORKING TIME】Each product is with 2 CR1220 button batteries (installed in the product in advance). The battery can be used over 24 hours, which satisfies your need for the party. You can change battery by yourself to regain its long-time use.