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. 1. Display Many pre-stored designs and text; 2. Attach 1, 2 or 3 blades/wheel; 3. Use 3 AAA Batteries per Blade; 4. Waterproof and Anti-shake design; 5. High bright Red, Green, Yellow or Blue LED; 6. Only 7 mph needed for full image. (3 blades) 12mph for 2 blades 16mph for 1 blade 7. Lasts up to 40 hours on fresh batteries. 8. Easy install and easy to change batteries.