1. It is made of high-quality materials, and practical. 2. Design: , colorful switch, stop and light up, light up when dark. 3. 3 modes, cool and amazing: colorful mode, breathing mode, . 4. 7 colors: arbitrary switching, three-halo design can enhance the edge brightness and perspective intensity, and perfectly display the cold light of the smart light-emitting coaster. 5. Acrylic material has crystal-like transparency, light transmittance is above 92%, soft light, clear vision, acrylic plate has good abrasion resistance, good stability, and resistance to chemical . 6. Waterproof design, high temperature resistance, easy operation, cool environment. Product Type: Coaster Coaster Installation position: water cup holder size:6.8cm in diameter Material:Acrylic colour:White + Black Package Contents: 2 x Cup Mat 1 x Charging Cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.