Wireless tach for high RPM engines
Small size to fit in your pocket
Fast response while reading
19,990 RPM capability
Maximum RPM recall
Programmable for different pulses per revolution
It functions well I don't know how true it is tho if I set a saw where the manual says it's supposed to run it sounds was more lean than it should
This one has all the features, does 1 and 2 cylinder engines, 2 and 4 cycle plus it has a max rpm recall as well! Replaceable battery, it’s pretty great!!!