Works great! my first unit was a lemon. - Caldwell Ballistic Precision Chronograph G2

OK ... my first review was a tad on the harsh side. Turns out I had a bad unit. The replacement unit (that Optics Planet sent me in no time flat) works perfectly. I took it to the range today ... 112 degrees, in direct sunlight, shot 121 rounds through it and did not miss a single report. The software is fantastic and the measurements were accurate, as I was shooting factory loads to establish a baseline, and these have been tested with several other chronographs under similar conditions in the same guns. I took it in the shade and fired a few more using the lights to check that ... could not be happier.
So ... don't let the fact that I got a bad one deter you. Optics Planet, as always, had service and prices second to none!