2-Pack of Smart Color-Changing Car Coasters: The Monster Multicolor LED Cup Holder Lights come in a convenient 2-pack, adding a vibrant, customizable touch to your car’s interior. Each coaster features multicolor LED lights that automatically adjust to suit your mood or preference, bringing style and atmosphere to your vehicle with ease. Motion Detecting Smart Sensors: Equipped with smart motion sensors, these LED coasters automatically turn on when they detect motion and turn off when no movement is detected, offering a hands-free, seamless experience. The motion-sensing feature ensures that the lights are only active when needed, preserving battery life and enhancing convenience. On by Night, Off by Day for Optimal Energy Efficiency: The Monster LED Cup Holder Lights are designed to automatically activate at night and turn off during the day, ensuring they only shine when they’re most useful. This energy-efficient feature keeps your lights glowing when needed and conserves power during daylight hours. Rechargeable with 15 Days of Power on a 2-Hour Charge: These coasters come with a rechargeable battery that provides up to 15 days of use on just a 2-hour charge. With such long-lasting power, you can enjoy vibrant illumination for weeks without the need for constant recharging, making them an ideal, low-maintenance upgrade for your car’s interior. Perfect Fit for Most Car Cup Holders: Designed to fit most car cup holders, the Monster LED Cup Holder Lights are easy to install and stay securely in place. The coasters are compact, durable, and designed to complement any car interior, adding an eye-catching element to your vehicle without taking up much space.