The Vapor speedometer tachometer is a popular choice for both on and off-road enthusiasts. Vapor's large digital tachometer bar graph is easy to read. At a small size of 4.2 x 2.3 inches, Vapor is perfect for all types of riding like cross country, trail riding or at the track. The main features include a large RPM graph and speed readout, with much more data built in. At the top, programmable LED lights blink when it’s time to shift gears or during an over-temp event.