Litespoke is the worlds first 7-color, double-sided bicycle safety lighting system that provides a multi-color display for bicycles. Have fun and show your colors! You can even design your own message. Its simple with the letter buttons on each Litespoke. A single Litespoke displays 24 preloaded 7-colour light patterns in sequence on both sides of the wheel. Add additional Litespokes on the same wheel for multiple effects displaying thousands of kaleidoscopic patterns. Litespoke is water-proof, shockproof and foolproof. Operates on 3 AA batteries for more than 72 hours of fun. Its also a safety light...Litespoke alerts approaching traffic. Its the perfect nightlightproviding both fun and safety. Installation is Easy-on and Easy-off of any bicycle wheel with a wheel diameter of 20" or greater. Simply use the furnished wing nuts. No tools needed. Wave Litespoke with your arms for great lighting effects also. LED in Red+Yellow+Green+Blue+Cyan+Purple+White 24 preloaded light patterns, including a programmable short text message. Colors are changed randomly. Two Litespokes create 276(24*23/2) light patterns. Three Litespokes create 2, 024(24*23*22/3/2) light patterns.