Create your own light show just by taking an evening ride on your bike. And you will have the safety bonus of being seen while you ride. The NiteIze SpokeLit does it all for you. There are two light show modes - continous that cycles through the color spectrum and flashing in red. The SpokeLit attaches easily to your spokes; press it on and slide it towards the rim until it is securely in place. Just squeeze it front to back to turn it on, change modes and turn it off. The two included standard batteries are easily replaced.