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Westcott

FJ400 II 400Ws Battery-Powered Touchscreen Monolight Strobe with Bowens S-Type Fitting

SKU: WEST-5700-A

£599.00

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The FJ400 II 400Ws Touchscreen Strobe is a high-performance, portable lighting solution designed for professional photographers and content creators. Combining ultra-fast recycle times, powerful 400Ws output, AC/DC battery flexibility, and an intuitive colour OLED touchscreen, it delivers exceptional speed, reliability, and creative control for both studio and on-location shoots.

Key Features

  • 400Ws versatile output (9 F-stops)

    Delivers a wide power range for everything from subtle fill light to full-power illumination in demanding shooting conditions.

  • Ultra-fast recycle times (0.01–0.9 sec)

    Industry-leading speed ensures you never miss a moment, ideal for action, sports, and fast-paced shooting environments.

  • Flexible AC/DC battery system

    Provides 550+ full-power flashes per charge with the included battery, with optional higher-capacity upgrades available.

  • Consistent 5500K colour temperature

    Maintains accurate colour across the entire output range for professional, repeatable results.

  • Full-colour OLED touchscreen

    Intuitive interface with tap, swipe, and slide controls for fast, effortless adjustments on set.

  • High-speed flash duration (up to 1/24,000s)

    Freezes motion with precision, perfect for capturing sharp action shots.

  • Compact and portable design

    Weighs just 5.3 lbs, making it easy to transport and ideal for location work.

  • 30W bi-colour LED modelling light

    Adjustable from 2700K to 6500K for previewing lighting and adding continuous light when needed.

What’s Included

  • FJ400 II 400Ws Strobe
  • FJ Pro Battery
  • AC power adapter and charging cable
  • Protective reflector
  • Carry case

(Optional accessories and additional batteries sold separately)

What It’s Used For

This strobe is designed to give photographers full creative control, allowing you to:

  • Capture high-speed action with precision flash timing
  • Shoot studio portraits with consistent, accurate lighting
  • Work on location without relying on mains power
  • Create dynamic lighting setups using multiple strobes
  • Use high-speed sync for outdoor shooting in bright conditions
  • Experiment with advanced lighting techniques like multi-frame effects

Practical Advantages

  • Fast workflow:

    Minimal downtime thanks to rapid recycling

  • Portable power:

    Reliable battery performance for location shoots

  • System integration:

    Compatible with a wide wireless ecosystem

  • User-friendly:

    Touchscreen interface reduces setup time

  • Creative flexibility:

    Advanced modes and lighting effects built in

Simple Summary

The FJ400 II is a powerful, portable 400Ws strobe with ultra-fast performance, reliable colour, and intuitive touchscreen control—making it an essential tool for photographers who need speed, flexibility, and professional results anywhere.

Feature List (Condensed)

  • 400Ws output with 9-stop range
  • 0.01–0.9 second recycle time
  • 550+ full-power flashes per charge
  • 5500K ±150K colour consistency
  • OLED colour touchscreen interface
  • Flash duration up to 1/24,000s
  • High-Speed Sync up to 1/8000s
  • 30W bi-colour LED modelling light (2700K–6500K)
  • Bowens mount compatibility
  • Wireless control (328 ft range, 16 groups, 31 channels)
  • Compact design (5.3 lbs)
  • USB-C firmware updates

Features

  • 400Ws output with 9-stop range
  • 0.01–0.9 second recycle time
  • 550+ full-power flashes per charge
  • OLED colour touchscreen interface
  • Flash duration up to 1/24,000s
  • High-Speed Sync up to 1/8000s
  • 30W bi-colour LED modelling light (2700K–6500K)
  • Bowens mount compatibility/li>
  • Wireless control (328 ft range, 16 groups, 31 channels)

What’s In the Box

  • 1× FJ400 II Strobe
  • 1× FJ Pro AC/DC Battery
  • 1× Frosted Glass Dome
  • 1× 55-Degree Magnetic Reflector (Bowens)
  • 1× Magnetic Gel Set (CTO, 1/2-CTO, Window Green, Diffusion)
  • 1× Power Adapter & Cord
  • 1× USB Cable
  • 1× FJ400 II Gear Case
  • 1× Rapid Box Switch Insert (FJ800, FJ400 II, FJ400, Bowens)

Specifications

Strobe

Maximum Power 400Ws
Energy Range 9 F-Stop (1.56 - 400Ws)
Energy Range 9 F-Stop (1.56 - 400Ws)
Flash Duration Up to 1/24000s
Flash Duration (t0.1) Normal: 1/200 – 1/6540s
Freeze: 1/220 – 1/10800s
Flash Duration (t0.5) Normal: 1/600 – 1/16500s
Freeze: 1/500 – 1/24000s
Recycle Time 0.01s - 0.9s
Continuous Capture 50 FPS (Camera & Power Dependent)
Color Temperature Stability Normal/TTL: 5500K ±150K
HSS: 5500K ±300K
Freeze: 5500K ±500K (E.R. 3-9)
Mounting System Bowens S-Type
Max Modifier Load 9.1 kg (using Switch modifiers)
Flash Increments 0.1-Stop and 1-Stop
Flash Modes Manual, TTL
Delay Function Yes (Manual)
Delay Function Yes (Manual)
Mask Function Yes (Manual Mode)
IGBT ±3
Modeling Lamp LED 30W Bi-color (2700-6500K)
Modeling Lamp LED 30W Bi-color (2700-6500K)
Sync Functions HSS, Front Curtain, Rear Curtain, Freeze
Sync Speed 1/8000s (High-Speed)
Wireless Frequency 2.4 GHz
Wireless Channels 31 (01-31)
Wireless Channels 31 (01-31)
Wireless Groups 16
Wireless Range 328' (100m)
Optical Sensor Yes
Auto-Dump Yes
Audible Beep Yes
Auto. Memory Recall Yes
Auto. Power Off Yes

 

Battery

Flashes per Charge FJ Pro Battery: 550+ at Full Power
Optional FJ ProMax Battery: 1000+
Battery Type FJ Pro AC/DC Li-ion Battery
Battery Capacity 74Wh, 2500mAh
Battery Voltage 29.6V
Battery Removable Yes
Equipment Power LED Display
Charge Time ~1.5 Hours
Charge Cycles 300+ (@80% after 300 cycles)
AC Power Requirement Battery Level ≥25%

 

Electrical

Power Type AC/DC
Certifications FJ400 II: CE, ROHS, FCC
FJPro Battery: CE, ROHS
AC Adapter: CE, cETLus, RoHs
Input Power 100-240 VAC, 50/60 Hz, 1.6A
Output Power DC 33.6V, 2A
Power Cord 2.9m
Plug type Type G (UK)
Power Supply 100-240 VAC, 50/60 Hz 1.5A Max
Battery Type FJ Pro or optional FJ ProMax AC/DC Li-ion Battery
Control Display Color OLED Touchscreen
Cable Port USB-C (Firmware)
USB Capability USB-C (Firmware Updates)
Firmware Upgradable Yes
Cooling Self-monitoring Multi-stage Cooling System
Operating Temp 32° to 113° (0° to 45°C)
Auto. Power Off Yes

 

General

Product Dimensions 23.5 × 11.2 × 17.0 cm
Item Weight 2.4 kg
Materials Nylon, Plastic, Aluminium, Rubber, Electrical Components
Use & Care Instructions
  • Wipe with a dry cloth as needed.
  • Keep away from fire, water, and moisture. Do not submerge.
  • Avoid drastic temperature changes before, during, and/or after use
  • Ensure the FJ Strobe is securely mounted before use.
  • Surrounding RF interference may affect communication performance.
  • Do not modify Westcott products. Contact Westcott for assistance.

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Delivery & Returns

UK Delivery Rates

Free UK Standard delivery on orders over £150.00*

Order Date (if received before 3pm) Cost Latest Expected Delivery Date

UK Standard

(Free for orders over £150.00 offer excludes Northern Ireland & Additional Shipping Fees)

Spend under £9.99 -  £5.99

Spend under £149.99 - £3.99

Spend £150+ - Free

2-4 Working Days
UK Express Delivery £5.99 1-3 Working Days
UK Next Working Day £8.00 Next Working Day
UK Next Working Day (Guaranteed) £15 Next Working Day
UK Before 2pm Next Working Day £18.00 Before 2pm Next Working Day
UK Saturday Delivery £30.00 The Next Saturday
UK Sunday Delivery £30.00 The Next Sunday

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Returns

EssentialPhoto & Video is committed to the provision of quality and reliable products and outstanding customer service. Buyers are entitled to request cancellation of an order within 14 days of receipt of the goods, and are granted a further 14 days to return the item to us for a full refund.

Please be aware: Products may vary slightly from batch to batch. Images provided online are as accurate a representation as possible, however please note that the colour and design of products may vary slightly, but that this does not affect functionality. 

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International Delivery Rates

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