The F1 Chrony reads velocity in feet per second (or metres per second) and works in a velocity range from 30fps to 7000fps (10mps to 2134mps) and its accuracy rating is 99.5%

The F1 Chrony features a stereo jack for optional Ballistic Chrony Printer
Measures F.P.S
Velocity remains on display until you shoot again
Uses 9v alkaline battery (48 hrs of continuous use)
99.5% Accuracy
Used condition odd mark, works fine only selling due to upgrade. 60 posted UK
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