GarminXero C1 Pro Chronograph with FPS Reading Compact Chronograph, Simple Set Up, Precise Readings, Versatile Performance with Accessories

I've been an electronic technician for over 40 years. In all that time I've used thousands of electronic devices. This is by far the easiest, most intuitively laid out, product I've ever used. Turn it on by holding the button that says power. Once it comes on, select new session, select mode (rifle, pistol, bow, air rifle or other), select velocity range (subsonic or super sonic), enter the projectile weight, a picture then shows you where to place it relative to the muzzle and then it's ready to measure the velocity. No need to calibrate it. No need to trigger it. Just start shooting and it will tell you the velocity. Once done, hit the back button and end session. If you've connected your phone, the data will just show up in the app. No need to sync or send the data, it just happens.Truly an amazing device. All other chronometers pale in comparison.

I've been using chronographs since 1989. This is the best I've seen. It isn't cheap, but it is good. Easy to transport and set up, no worries about blown screens or shadows from clouds, accurate and consistent.

Not sure how I loaded ammo without this, expensive but very nice, simple to use

Works great. Much simpler to setup and use than other chronos that I have used in the past. Highly recommended!

Easy to set up and use. Highly recommend to bring your game to the next level

Awesome chronograph. A huge upgrade from the old school type. The app is good and setup is simple.

Very convenient and works greatBest price is from AMAZON

Excellent Chronograph. It is easy to use, simple to set up and very consistent. Always impressed with Garmin products.