The Solar LED Cup Holder Lights can absorb solar power from the sun. With a built-in physical lithium battery, it can be manually charged by a USB. With a sensitive light sensor and a vibration sensor, this cup mat will automatically turn on at dark when it feels vibration, and turn off after about 15s. It's waterproof, so it's perfect to use as a car cup coaster mat, Fit for any vehicle! Not to mention it's easy to install and remove, no tools and wiring needed.
Sensor: Light sensor and vibration sensor
Light Delay Time: About 15s
Battery: Built-in 3.7V 220mAh battery
Size: 6.5*1cm / 2.6*0.4 (D*H)
Charge Time: About 5hrs full charge by Solar Light (USB - 0.5 hrs)
On/off Switch: there is a button on the back of the smart glass pad, press 5 seconds to start / turn off the light. Make sure the product's switch is properly opened when using it.