FX D1 Radar Chronograph with In-Built Display, Barrel and Picatinny Rail Mount
The FX D1 Radar Chronograph takes everything people liked about the Pocket Chronograph V2 and removes the one remaining annoyance… needing your phone just to see your results.
With a built-in display, the D1 gives you real-time velocity data directly on the unit, making it far more practical for quick checks, tuning sessions and general range use. No apps, no pairing, no digging your phone out with cold hands. Just switch it on and shoot.
It’s still the same idea at its core, a compact Doppler radar chronograph designed to make velocity testing simple, portable and genuinely usable day-to-day.
Built-in display for instant feedback
The biggest upgrade here is obvious and actually useful. The integrated screen allows you to monitor:
Current shot velocity
Minimum velocity
Maximum velocity
Average velocity
Shot count
For quick tuning or checking consistency, this alone makes the D1 a much more self-contained tool compared to earlier versions.
If you still want deeper data tracking, Bluetooth connectivity remains available via the FX Radar app, but now it’s optional rather than required.
Simple mounting, fast setup
The D1 uses a ¼-turn quick-release mounting system, making it easy to attach or remove in seconds without tools.
Included mounting options:
Picatinny rail mount
Barrel mount (rubber secured)
90° angled adapter
Quick-release interface system
This flexibility means you can mount it how you like, whether that’s on the rifle, under the barrel, or on a bench setup.
As with any barrel-mounted device, it’s worth noting that direct barrel mounting can influence harmonics, so for the best consistency, many users prefer rail or bench positioning.
Radar-based measurement, no lighting needed
Using Doppler radar, the D1 works in:
Bright daylight
Indoor ranges
Poor lighting
Complete darkness
No light gates, no alignment rods, no “stand exactly here and hope it reads” moments.
It measures velocities from around 400 FPS up to 1250 FPS, covering most airguns, CO2 systems, subsonic rimfire and even archery setups.
Compact, portable and genuinely usable
Weighing next to nothing and small enough to live in a range bag permanently, the D1 is designed for real-world use, not just occasional testing.
Quick to deploy
Easy to move between rifles
No complicated setup
It’s not a lab-grade instrument, and it’s not pretending to be. What it is, is a convenient, everyday chronograph that actually gets used.
Key Features
Built-in display with real-time shot data
Doppler radar measurement system
Velocity range up to 1250 FPS
Full shot string statistics on-device
Bluetooth connectivity (optional) via FX Radar app
¼-turn quick-release mounting system
Multiple mounting options are included
Works in all lighting conditions
USB-C rechargeable internal battery
Compact and lightweight design
Specifications
Dimensions: 50 × 39 × 60 mm
Weight: 78 g
Velocity Range: ~400 – 1250 FPS
Measurement Technology: Doppler Radar
Interface: Built-in display + Bluetooth
Power Source: USB-C rechargeable in-built battery
Mounting Options:
Picatinny rail
Barrel mount
90° adapter
Quick-release system
A smarter everyday chronograph
The FX D1 doesn’t reinvent the concept; it just fixes the most obvious limitation of the earlier models. If you want fast, portable, no-fuss velocity data without setting up a full chronograph rig, this is about as easy as it gets.
Important usage note
Like previous FX radar chronographs, performance can vary with very small or lightweight projectiles.
Best suited to calibres above 5mm (.20 and up)
.177 (4.5mm) may produce inconsistent or unreliable readings depending on setup
For best results, careful positioning and consistent mounting are recommended.
