feature:<br /><br />100%  and high quality<br /><br /> the product is consist of 14 pcs colorful leds<br /><br /> it can flash 30 different patterns，and the patterns will be changed every 4 seconds<br /><br /> patterns is clear and completely when speed up to 20kms/hr<br /><br />auto-sensing switch control<br /><br /> equipped with light sensor and movement sensor，flash only at night and action<br /><br /> it will not work and save power when not riding<br /><br /> battery: operated by 1x aaa，could be max to 12hrs when it works<br /><br /> size: 109mmx72mm(lxw)<br /><br /> waterproof level: ipx5<br /><br /> material: plastics<br /><br />package include:<br /><br />1x spoke light<br />1 x aaa battery