Specifications:
<br />Quantity of LED: 32
<br />Color of light: Blue, green, red and orange
<br />Material: Plastic
<br />Limit of wheel diameter: 20in and above           
<br />Requirement of speed: 20km/h and above
<br />Wheel light size: 16 * 9 * 2.3cm / 6.3 * 3.5 * 0.9in (max.)
<br />Wheel light weight: 65g / 2.3oz
<br />Package size: 16.5 * 10 * 2.3cm / 6.5 * 3.9 * 0.9in
<br />Package weight: 122g / 4.3oz