PREMIUM MATERIALS: The LED car coasters are made of acrylic, they are dustproof with a waterproof surface that guarantees the safety of the cup, and the smooth surface is easy to clean for a long time of use. The size is 68mm x 68mm. < /p> VIBRATION-SENSING: When the luminescent cup pad detects vibration, it will automatically light up in the dark and the lights will automatically turn off in 15 seconds without detecting vibration, it’s smart and convenient. ADD THE COOL COLOR FOR YOUR CARS: Our LED cup holder has 3 modes (colorful, breath and gradient) and 7 light colors (white, red, blue green, yellow, purple and ice blue). You can change the colors freely according to your moods and will give you a pleasant driving experience. EASY TO USE: There is a button on the back of the USB charging mat for you to control light mode and change lights color, an adorable gift for family, friends, co-workers and most car owners. PACKAGE CONTENTS: You will get 2 sub- LED car glasses and 1 USB