Feature:1. Built‑in light sensor and vibration sensor, the coaster light will automatically turn off within 15s when there is no vibration or movement.2. With a solar panel, the coaster can be powered by solar energy, which is convenient and safe.3. The coaster has an IP67 waterproof rating, so there is no need to worry about water spilling on the coaster when the car is driving.4. Made of high‑quality acrylic material, soft texture and good toughness, not easy to wear after long‑term use.5. The LED coaster is easy to install, no wiring or additional tools are needed, just put it in the cup slot.How to Use:1. Long press the label button on the back and it will flash for about 2 seconds, indicating that it is powered on.2. Only in a dim place (at night), plus vibration (when driving) will it be sensitive to light.3. It will automatically go to sleep and turn off the light if it does not move for 20 seconds, and it will light up again when it moves again.4. Long press the button for 4 seconds and the light will turn off.5. The light does not turn on after a period of use because it is out of power and needs to be exposed to the sun for charging.6. When the light is too strong during the day, it will not be bright