Westcott

Westcott FJ400 Strobe Light Backpack Kit with Wireless Trigger

4.6 (63 reviews)

Portable 400Ws strobe kit with AC/DC power, wireless trigger, and backpack for on-location professional lighting.

$649.95*
In Stock on Amazon.com
View on Amazon

*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

Affiliate Disclosure: Studio Supplies may earn a commission from qualifying purchases made through links on this page, at no additional cost to you. This helps support our editorial team.

Notice a mistake? Let Us Know

Overview

The Westcott FJ400 Strobe Light Backpack Kit delivers a complete portable lighting solution for photographers who need reliable flash power both in the studio and on location. The FJ400 strobe produces 400 watt-seconds of flash output with a consistent 5500K color temperature (±150K), ensuring accurate and repeatable color across an entire shoot. Its built-in AC/DC battery system means there are no external battery packs to manage — the strobe runs on its internal battery when shooting remotely and switches seamlessly to AC power when an outlet is available. With a full-power recycle time under one second, the FJ400 keeps pace with fast shooting situations without leaving photographers waiting between frames.

The included FJ-X2m Universal Wireless Trigger enables remote power adjustment and triggering, with compatibility across Canon, Nikon, Sony, Fujifilm, Panasonic, and Olympus camera systems. The FJ400 supports Manual, TTL, HSS, and Freeze Sync flash modes, giving photographers control over exposure in a wide range of scenarios from studio portraits to outdoor action. A 20W LED modeling lamp at 5600K provides a visual preview of light direction and quality. The Bowens S-Type mount accepts a vast ecosystem of light modifiers, and the backpack carry case included in this kit keeps the strobe, trigger, and accessories organized for transport between shoots.

Key Features

Westcott FJ400 400Ws Strobe with AC/DC Battery 1-Light Backpack Kit

Specifications

Brand
Westcott
Model
FJ400 Strobe Light Kit
Flash Power
400Ws
Recycle Speed
Under 1 Second at Full Power
Flash Modes
Manual, TTL, HSS, Freeze Sync
Color Temperature
5500K (±150K)
Modeling Lamp
20W 5600K LED
Mounting System
Bowens S-Type
Power
AC/DC with Built-In Battery
Wireless Trigger
FJ-X2m Universal Wireless Trigger

Pros & Cons

👍 Pros

  • Built-in AC/DC battery eliminates the need for separate battery packs when shooting on location
  • Sub-one-second recycle time at full 400Ws power supports fast-paced shooting workflows
  • TTL and HSS support across major camera brands via the included FJ-X2m wireless trigger
  • Bowens S-Type mount provides broad compatibility with existing lighting modifiers
  • Backpack carry case keeps the entire kit organized and portable for mobile shoots

👎 Cons

  • 400Ws maximum output may not be sufficient for overpowering bright midday sunlight at distance
  • Single-light kit requires purchasing additional FJ400 units for multi-light setups
  • The included FJ-X2m trigger lacks the touchscreen interface found on higher-end wireless controllers
  • 20W LED modeling lamp is relatively dim for previewing light placement in bright ambient conditions

Frequently Asked Questions

Yes, the FJ400 features a built-in AC/DC battery system, allowing it to operate on battery power for location shoots or switch to AC power in the studio without any additional battery packs.
The FJ400 supports Manual, TTL, and High-Speed Sync (HSS) flash modes, as well as a Freeze Sync mode for capturing fast-moving subjects with minimal motion blur.
Yes, the FJ400 uses a Bowens S-Type mount, which is compatible with a wide range of softboxes, beauty dishes, reflectors, and other modifiers from Westcott and third-party manufacturers.
The kit includes the Westcott FJ-X2m Universal Wireless Trigger, which provides remote power control and triggering and is compatible with most major camera brands.
The FJ400 recycles in under one second at full 400Ws power output, allowing for rapid shooting without long delays between frames.