TOP QUALITY MATERIALS: LED car coasters are made of Acrylic, they are dust-proof with waterproof surface that ensures holing cup safe, and the smooth surface is easy to clean for long time using. | VIBRATION-SENSING: when luminescent cup pad senses vibration, it will automatically turn on in the dark, and lights will automatically turn off in 15 seconds without sensing vibration, it's smart and convenient. | PACKAGE CONTNETS: you will get 2 pieces LED car coasters and 1 piece USB cable. It is convenient for connecting to the car's USB interface directly, and the nice performance makes LED cup holder lights can work long time (last about 8 hours) after fully charged. | ADD THE COOL COLOR FOR YOUR CARS: Our LED cup holder light have 3 modes ( Colorful, breath and gradient ) and 7 colors light ( White, Red, Blue Green, Yellow, Purple and ice blue ). You can change the colors freely according your moods and will give you a cool driving experience. | EASY TO USE: there is a button on the back of USB charging cup mat for you to control light mode and change lights color, a adorable gift to family, fiends, colleagues and most car owners.