Easy to set digital shift light will help you leave your competitor eating exhaust at the track! The new Proform Mini Digital Shift Light and Diagnostic Tachometer can be easily installed in vehicles with 1-12 cylinders. Measuring at only 4-1/4 inches long, this 3 LED light will give you the signal when it is time to shift! All settings are easily controlled with two buttons. Features include a 100-12,000 RPM range in 100 RPM increments, Cylinder range of 1 thru 12, Adjustable brightness for the digital display, and a display on/off feature when in use. Also, when you are in the garage tuning your ride, you can easily detach the shift light from its mount and place it on your dashboard so the tachometer digital display is facing out...so you can see it while you're tuning. Imagine that...no more yelling into the house to get somebody to tell you when your engine is at 3000 RPM! Simple, Innovative, Affordable...that's PROFORM! Sold individually.