DO YOU WANT OTHER VEHICLES TO SEE YOU FROM THE SIDE??!! YES!! The TIRE LED is a VERY High Tech TIRE VALVE STEM CAP with a Shiny Silver Aluminum Housing and a Clear Round Magnifying Dome with a VERY BRIGHT LED LIGHT. The TIRE LEDs simply screw on to your tire valve stem (no special wiring). Can be installed and removed in seconds ! When your tire begins to turn ...the TIRE LED automatically lights up with a Continuous Solid Bright LED Light and then TIRE LEDs automatically turn off when your wheel stops turning. The TIRE LED has a special computer chip "Light Sensor" that only turns on the TIRE LED when it is dark. This feature extends the life of your batteries. The Batteries (normal watch batteries) last for OVER 300+ hours of use. TIRE LEDs will look AWESOME on your bike. The TIRE LEDs are the Simplest, Quickest and Least Expensive way to make your Bike more visible at night and "Dress Up" your Motorcycle. The TIRE LEDs make a perfect gift for ALL Motorcycle Owners !!