FJ400 Strobe 400Ws with AC/DC Battery (US/CA Plug)

  • 400 watt-second AC/DC strobe
  • Integrated wireless communication with HSS, TTL, and more via FJ-X2m Universal Wireless Trigger, FJ80 Universal Speedlight, or Canon RT transmitter
  • The FJ400 Strobe supports 480+ full-power flashes per charge
  • The FJ400 Strobe features a 0.05 to 0.9 second recycle time
  • Removable AC/DC lithium polymer battery
  • Color temperature stability of 5500K (±150K) across entire energy range
  • High-Speed Sync up to 1/8000s, TTL, and Rear Curtain Sync capable
  • Continuous Capture up to 20 frames per second
  • 6 groups and 31 wireless channels
  • 9 F-stop energy range in 0.1 and 1.0 increments
  • FJ400 Strobe firmware upgradeable via the included USB-C cable

FJ400 Strobe 400Ws with AC/DC Battery
(US/CA Plug)

Never Miss a Shot Again

The FJ400 is the first portable 400Ws AC/DC strobe with under a second recycle speed at full power that offers an impressive 480+ full-power flashes per charge. The lightweight FJ400 offers unrivaled performance with the most accurate color temperature throughout its entire 9-stop output range.

FJ400 with Reflector - Front Angle
FJ400 Front View, Angled

TTL, High Speed Sync, Freeze Sync, and More

With an intuitive menu system and LCD color display, the FJ400 features Manual and TTL Flash Modes, High Speed Sync (HSS) up to 1/8000s, Freeze Sync up to 1/19000s, Continuous Capture up to 20 fps, Mask Function, Delay Function, Automatic Memory Recall, Rear Curtain Sync, Canon RT flash compatibility, group and channel assignment, Group Exposure Compensation, and much more. This strobe is firmware upgradeable via the included USB-C cable.

Say Goodbye to Brand-Specific Triggers

Integrated with a FJ Wireless Flash System receiver, the FJ400 strobe provides unrivaled features including multi-brand camera compatibility and High Speed Sync (HSS), TTL, and more when paired with a FJ-X2m Universal Wireless Trigger or the FJ80 Universal Touchscreen Speedlight. These wireless transmitters easily mount to a camera’s hot shoe and are compatible with most Canon, Nikon, Sony (with adapter), Fuji, Panasonic Lumix, and Olympus cameras. The strobe can also be controlled by a Canon RT transmitter.

FJ400 Strobe
FJ400 Battery Dark

Unrivaled Battery Performance

The removable lithium polymer battery provides both DC power for on-location freedom and AC trickle-charge performance when the state of charge is above 25%.

Consistent Color Temperature at Every Power Level

The FJ400 maintains a color temperature stability of 5500K (±150K) throughout its entire 9-stop output range, with flash increments of either 0.1 or 1.0 stops. It features a 20W 5600K LED modeling lamp with auto-adjust and independent output control.

FJ400 Side View

Optimized for Light Modifiers

The extended flash tube provides optimal light output allowing for a wider, even spread for filling light modifiers. Equipped with a Bowens S-Type mounting system, the FJ400 is easy to pair with your favorite softbox. The FJ400 includes a Magnetic 5” Reflector, Magnetic CCT Gel Set (CTO, 1/2-CTO, Window Green, Diffusion, Gel Frame), and a Rapid Box Switch Bowens Insert that allows you to pair your strobe with any Rapid Box Switch light modifier. The built-in tilter bracket with a tension screw offers secure mounting and positioning of large umbrellas and modifiers.

Designed with Safety In Mind

The FJ400 strobe is equipped with onboard self-monitoring cooling fans and an automatic shutoff feature to ensure safe operation during use.

FJ400 Safety Features


Performance Features

FJ400 Strobe
Maximum Power 400 Ws
Energy Range 9 F-Stop (1.56 – 400 Ws)
Flash Duration (t0.1) Normal: 1/280 – 1/3000s
Freeze: 1/280 – 1/7000s
Flash Duration (t0.5) Normal: 1/800 – 1/8500s
Freeze: 1/800 – 1/19000s
Recycle Time 0.05 – 0.9s
Continuous Capture 20 FPS (Camera Model Dependent)
Color Temperature Stability Normal/TTL/HSS: 5500K ±150K
Freeze: 5500K ±500K (E.R. 5-9)
Mounting System Bowens S-Type
Flash Increments 0.1-Stop and 1-Stop
Flash Modes Manual, TTL
Mask Function Yes (Manual)
Flash Exposure Compensation ±3
Modeling Lamp LED 20W 5600K ±200K
Sync Functions HSS, Normal (Front & Rear Curtain), Freeze
Sync Speed 1/8000s (High-Speed)
Wireless Radio Frequency 2.4 GHz
Wireless Channels 32 (AU, 01-31)
Wireless Groups 16
Wireless Range 985’ (300m)
Display LCD Color Display
Mount Built-in Tilter; 5/8” / 16mm Receptacle
Auto-Dump Yes
Cooling Self-Monitoring Cooling Fans
Voltage Stabilization Yes
Port Type USB-C for Firmware Updates (PC, Mac)
Auto-Power Off Yes
Audible Beep Yes
Delay Function Yes (Manual)
Auto Memory Recall Yes


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