Tube-style shift light, w/ innovative aim swivel mount. features 5 programmable shift points including launch lite, progressive shift, playback, digital rpm display, compatible with .5-6 pulse ignition signals (1-12 cyl engines), and 7 color shift light. this product features 90 seconds of engine rpm playback memory. replay using the digital display or connect to a standard auto meter tachometer to playback engine rpm on the tachometer dial.