Measurement: 65mm/2.56nch Diameter Circular Shape;Compatibility: Most Car Models;Installation: Simply placed into the cup holders, no need to be installed with tools.The product can be switched to different static colors by buttons; Led Color:Switchable Color;Red,Blue,Green,Yellow,White,Ice Blue,Pink; Material:Acrylic;Battery:Built-in 3.7V 240mAh battery;Charge Time:About…