Westcott

Westcott 4712M FJ400 Strobe 1-Light Backpack Kit

4.3 (18 reviews)
20W

Unleash Your Creative Potential with Professional Lighting The Westcott FJ400 Strobe 1-Light Backpack Kit is designed for photographers and videographers seeking portable and powerful lighting solutions. This kit includes the FJ400 400Ws AC/DC strobe, FJ-X3 M Universal Wireless Trigger, and Rapi...

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

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Overview

Unleash Your Creative Potential with Professional Lighting

The Westcott FJ400 Strobe 1-Light Backpack Kit is designed for photographers and videographers seeking portable and powerful lighting solutions. This kit includes the FJ400 400Ws AC/DC strobe, FJ-X3 M Universal Wireless Trigger, and Rapid Box Switch Octa-S softbox, all conveniently stored in a lightweight backpack. With TTL, High Speed Sync, and Freeze Sync capabilities, this strobe offers exceptional control and versatility for any shoot.

Specifications:

  • Brand: Westcott
  • Model: 4712M
  • Strobe Power: 400Ws
  • Recycle Speed: Under 1 Second at Full Power
  • Flashes per Charge: Over 480 Full-Power Flashes
  • Color Temperature: 5500K (±150K)
  • Wireless Trigger: FJ-X3 M Universal
  • Light Modifier: Rapid Box Switch Octa-S

Key Features

FJ400 Strobe: The Westcott 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

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

Quick and Compact Rapid Box Switch Softboxes: Constructed with the solid aluminum umbrella-inspired framework, the design of the included Rapid Box Switch maximizes durability, minimizes weight, eliminates the need for separate support rods, and makes setup a breeze

Store and Transport Your Strobe Kit: Equipped with a large, central storage compartment featuring removable dividers, the included backpack is ideal for traveling comfortably with your FJ400 gear

Consistent Color Temperature: 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

Specifications

Strobe Power Output
400Ws
Recycle Speed
Under a second at full power
Flashes Per Charge
480+ at full power
Color Temperature Stability
5500K (±150K)
Output Range
9-stop
Flash Increments
0.1 or 1.0 stops
Modeling Lamp
20W 5600K LED with auto-adjust and independent output control
Cooling
Onboard self-monitoring cooling fans
Safety Features
Automatic shutoff
Softbox Framework
Solid aluminum umbrella-inspired
Kit Storage
Large, central storage compartment with removable dividers in included backpack

Pros & Cons

👍 Pros

  • Offers a fast recycle speed of under a second at full power, ensuring quick follow-up shots.
  • Delivers over 480 full-power flashes per charge, providing extended use during demanding shoots.
  • Equipped with onboard self-monitoring cooling fans and an automatic shutoff for safe operation.
  • Rapid Box Switch Softboxes feature a solid aluminum umbrella-inspired framework for quick setup and durability.
  • Maintains consistent color temperature stability of 5500K (±150K) across its entire 9-stop output range.

👎 Cons

  • The kit is designed for a single light setup, which may not be sufficient for more complex lighting scenarios.
  • While portable, the 400Ws power output is an AC/DC strobe, which may require access to power outlets for prolonged use without battery.
  • Specific details on the type or number of included Rapid Box Switch Softboxes are not provided.
  • The backpack, while suitable for travel, might not offer as much protection as a hard case in extreme conditions.
  • The modeling lamp is 20W, which may be less powerful than modeling lamps on some other professional strobes.

Frequently Asked Questions

The Westcott FJ400 strobe can deliver an impressive 480+ full-power flashes per charge, making it suitable for extended shooting sessions.
The FJ400 strobe features a recycle speed of under a second at full power, allowing for rapid successive shots.
Yes, the FJ400 maintains a color temperature stability of 5500K (±150K) across its entire 9-stop output range.
The kit includes Quick and Compact Rapid Box Switch Softboxes, constructed with a solid aluminum umbrella-inspired framework for easy setup and durability.
The FJ400 strobe is equipped with onboard self-monitoring cooling fans and an automatic shutoff feature to ensure safe operation during use.