Dealer Site
Want a Graf & Sons dealer account? Apply now to see our wholesale prices and shop online. Already have an account? Sign in. Not a dealer? Shop our retail site.

Competition Electronics ProChrono DLX™ Chronograph

Competition Electronics ProChrono DLX™ Chronograph
Competition Electronics ProChrono DLX™ Chronograph
Competition Electronics ProChrono DLX™ Chronograph
Item #:CE3820
Log-in or apply for an account
to see dealer prices.
Availability:In Stock
Read 10 Reviews

Product Information

Introducing the ProChrono DLX ballistic chronograph with improved accuracy specs and built-in Bluetooth

The next generation of our ProChrono model based on a time proven design that has been measuring “almost anything that shoots” since 1985! Great for firearms, shotguns, archery, airguns, and paintball. Everything is included for outdoor use. For indoor use, we recommend our optional Indoor Lighting System (part# CEI-4100). Requires one 9 volt alkaline battery for operation (not included)

Here are some key features:

  • On-board Bluetooth connectivity, and more options with FREE apps for iOS, Android, Kindle, PC, and Mac
  • Internal and external refinements with updates to the circuitry and enclosure design
  • Built in full featured operating system with multiple shot string memory and statistics
  • Sensing system compatible with a wide variety of light conditions and projectiles
  • Faster internal shot clock for improved accuracy to +/- .5% or better
  • Made in the USA quality at an affordable price
  • 2 year warrantee against defects in material and workmanship, and a 1/2 price repair guarantee
  • Over 30 years of experience in chronograph design and manufacturing
  • Replaceable Alkaline 9 volt battery power (not included) for 20+ hours of operation
  • Quality accessories and replacement parts at a reasonable price

Read 10 Reviews - Average Rating: 5 stars

First Chrono

By Kenneth Y. on Sep 10, 2020
Works great, really like the Bluetooth feature and the information it provides on power factor and ft/lbs of energy.

No regrets.

By Kevin K. on Jul 31, 2020
This is my first chrono and it does everything it is supposed to do. I love the bluetooth feature and it connects easily to my Android phone. Grafs customer service was excellent as always.

Great price

By Clint M. on Feb 15, 2020
Best price i found anywhere it linked up to my phone love that feature not used it yet but going to range in next few days to test ammo with it

Great Chrono

By David C. on Jan 06, 2020
I purchased this after disabling my Caldwell chrono with a 10mm bullet. Almost happy I did, as this chrono is much, much better. The phone software actually works on an Android phone, and works well. The chrono is better at picking up the bullets than the Caldwell, and having access to your data on a computer is a tremendous help. Overall, I am very happy with the upgrade.


By GARY S. on Jan 01, 2020
Really like the bluetooth feature. Download app, turn on, good to go. No more straining to see display.

Pro Chrono DLX

By Joseph B. on Feb 10, 2019
I now use this as my main CHRONO as it has Bluetooth built in and connects to my android in 3 seconds. The app saves all the data so you can export later if you wish. Or, if you have a cell signal where you are shooting, you can just email the shoot string to yourself. When you are load testing for 300wm, that can turn into some expensive data. I still use my mag speed as a back up if it is really low light or wind is bad where the tripod becomes unstable. But that has only happened once in the last 2 months. Example data cut and paste

Name 300wm eldx 212
Number of Shots 10
Extreme Spread 37
Average 2858
Standard Deviation 12

Shot 1 Shot 2 Shot 3 Shot 4 Shot 5 Shot 6 Shot 7 Shot 8 Shot 9 Shot 10
2876 2861 2847 2879 2854 2864 2846 2847 2842 2867
1/31/2019 10:51 1/31/2019 10:54 1/31/2019 10:55 1/31/2019 10:57 1/31/2019 10:58 1/31/2019 11:44 1/31/2019 11:45 1/31/2019 11:46 1/31/2019 11:46 1/31/2019 11:47

Competition Electronics ProChrono DLX™ Chronograph

By Martin S. on Nov 01, 2018
Very easy to set up and gives readings visable from the bench

PROCHRONO with Bluetooth

By Michael A. on Oct 02, 2018
I own one other Chrono and had purchased another brand with Bluetooth, it did not work at all, was returned. This one worked right out of the box. Extremely easy to set up with Android, application quite intuitive. First time I used it I didn't expect it to be calling out the speeds on my phone. Nice! From what I can tell speeds are accurate.
Not thinking, I fired a few rapid shots, it does not catch all of them. My fault but just a heads up. Would highly recommend. So far my use has been with handgun. I shoot a couple of days a week and am competitive in benchrest rifle.


By JEFF F. on Oct 01, 2018

Excellent feature set for any price

By David E. on Sep 13, 2018
This new model is essentially the same as the Pro Chrono with the Bluetooth module add-on but with this one it's built in. It is very easy to use and the freely available software is very useful.

Sync's up easily with Android, iOS, Windows, or Macintosh.
3 of 3 customers found this page helpful. Submit your own rating by logging in.