Are you tuning an airgun? Or are you dailing in the ballistics of your pellet's trajectory?
You'll get nowhere without a good chronograph!

The FX Pocket Chrono D1 measures projectile velocity with extreme accuracy using radar technology.
The chronograph measures speeds from 120 to 380 m/s (400–1,250 fps) and operates reliably under all lighting and weather conditions.

Built‑in Display

A notable upgrade compared to the previous Pocket Chrono is the addition of a built‑in display.

Thanks to the integrated screen, you can immediately see the velocity of your last shot and the statistics of a shooting series, without needing a smartphone or external display.
Prefer using the FX Chrono app? You can still connect it to easily manage all your data.

Where to Mount the D1 Chrono

The D1 is mounted on the weapon in line with the direction of fire. This allows the compact chronometer to track the projectile as soon as it leaves the barrel.

The included barrel mount and Weaver/Picatinny mount provide multiple mounting options.

The D1 is weather‑resistant, rechargeable via USB‑C, and can optionally be connected to a smartphone app for extended statistics and firmware updates. Using the app is not required to measure shots.