The Fuze Wheel Writer lets you play 12 different images and animations on your bike wheels as you ride. This spoke-mounted light display features four LED units and easily attaches to any bike wheel 20 inches or larger. As the wheels spin, LEDs flash on and off to create more than a dozen different images and patterns, including a real-working speedometer. The patterns are visible in the daylight, but they show up best on an overcast day or at dusk. The Fuze Wheel Writer comes with a wheel writer, a frame magnet, four zip ties, and instructions.