Retra Flash Pro Max

The Retra Flash Pro Max is our new cutting-edge underwater strobe, designed to elevate your photography experience to the next level. 

Harnessing state-of-the-art advancements in underwater lighting technology, the Retra Flash Pro Max excels across diverse lighting scenarios, ensuring remarkable performance for all underwater photography styles. 

From vibrant reefs to captivating depths, the Retra Flash Pro Max stands as your ultimate lighting tool, delivering unparalleled versatility and performance.

Currently IN STOCK!




Currently IN STOCK!

Delivery to USA: 2-3 working days

Delivery to EU: 1-2 working days

Delivery to Australia and Asia: 2-5 working days

This item contains

  • 1x Retra Flash Pro Max
  • 1x 1"(inch) Mounting ball
  • 1x Allen key
  • 2x spare o-rings for battery compartment
  • 1x Silicone grease
  • 2 year Retra Warranty

User Manual

The Retra UWT App is available to download for FREE from Google Play or the App Store.

The Retra UWT App gives you valuable information on your Retra Flash and contains User Manuals for all Retra Flash models.

App Store Application Download Link
>>> Download App

Google Play Application Download Link
>>> Download App


Retra Warranty

The Retra Flash Pro Max ​comes with 2 years of Worldwide Retra Warranty.

This means that no matter where you are located the Worldwide Retra Warranty is valid and your Retra product will be taken care of​.​​​​

When purchased together with the Booster, both products receive additional 6 months of Worldwide Retra Warranty for a total of 2,5 years of coverage.

Read more about our​ Worldwide​ Retra Warranty here.


Sale price$1,600.00 USD¹

Retra Flash Video Review

Dive into this first impression video review to learn about our revolutionary new Retra Flash Pro Max and its cutting-edge features.

Take a closer look at the Retra Flash Pro Max and its features in this hands-on video review by Alex Mustard, followed by an impressive showcase of photographs made with the Retra Flash Pro Max, with added tips and tricks for aspiring underwater photographers.

Technical Specification


Retra Flash Pro Max


140 Ws

Power Source (1)

AA Batteries


Monolithic Aluminium Alloy

(1) 4x AA rechargeable batteries or 8x AA rechargeable batteries when using Booster

(2) Weight on land with 1" (inch) mounting ball and 4x AA Eneloop PRO Batteries / 8x AA Eneloop PRO Batteries respectively

(3) Recycle time varies depending on the state of batteries, chosen power setting and if using the Booster

– Jette & Glenn Egtved Hansen

"I've bought 2 pcs. of the Retra Pro Max, boosters, 1 snoot and several accessories. Before I bought the flashes, I had some questions, about the HSS and which flash trigger I needed for my camera and housing.

All my questions were answered professionally, and the following support has been outstanding. They really care about their customers. 

Excellent products and fast shipping.

This is truly a professional company, that I can highly recommend."

Instagram Profile >

– Ziad A. Al-Turki

"As someone who was always intimidated to use strobes, I cannot recommend Retra Strobes enough; whether you are a beginner underwater photographer, or an expert, Retra Strobes products are the perfect addition to your camera set up. 

Made with function and ease-of-use in mind, Retra Strobes take the guessing out of getting comfortable with strobes; with fantastic quality, clearly marked buttons, and a customer service team available to answer any questions you may have in a timely and expert manner, there isn’t another strobe on the market I would rather use. There’s no wonder why I’m on my third set of Retra Strobes now!"

Instagram Profile >

– William Gladstone, Emeritus Professor

"My Retra strobes give me an unparalleled quality of light underwater. This comes from their beautifully uniform beam, reliable firing and colour temperature, the intuitive power setting steps, and the battery life."

Instagram Profile >

– Bryan H. Blauvelt

"I am thoroughly impressed with the Retra workshop, this is outstanding service!"

Instagram Profile >

Imagine the Perfect Light Source

The Retra Flash Pro Max has the power of larger strobes while maintaining its travel friendly size.

The circular flashtube offers a soft naturalistic light that you can fine-tune to get the perfect exposure of your scene.

  • Soft naturalistic light
  • Even illumination from centre to edge
  • Fine-tune your light

Intuitive Back Panel Controls

The back panel is easy to learn and using the Retra Flash quickly becomes intuitive.

The ergonomic dials are different lengths and feature hard stops, as well as a satisfying click at every setting. This way, you can always know the mode and power setting of your strobe and make quick adjustments without looking.

Single pulse, TTL, HSS, and more. All essential firing modes, with a customizable user mode.

The OLED display shows relevant information based on selected mode: Recycle time, battery status, selected mode and power setting, etc.

Classic Bayonet Mount

The bayonet mount is an easy to use twist lock mechanism at the front of the strobe. The bayonet mount allows you to attach a selection of accessories that shape your light or change its color temperature.

The bayonet mount remains the same on all Retra Flash models and allows you to change photography styles on the go.

  • Locking mechanism for safely attaching accessories
  • Compatible with all existing Retra Flash front-mounted accessories

Leakage Detection & Prevention

The Retra Flash has built-in leakage detection that warns you if water ever enters the battery compartment.

But you can rest easy, knowing the battery compartment is sealed from the rest of the electronics.

  • Built-in leakage detection
  • Double O-ring protection
  • Battery compartment waterproof sealed from electronics
  • Circuit protection

Elegant & Sturdy Design

The Retra Flash Pro Max is a powerful travel friendly strobe that can fit in your suitcase easily.

  • Aluminium alloy casing
  • Monolithic design
  • Depth rating -100 m
  • Light-weight

Smartphone Connectivity

The Retra Flash Pro Max can connect to your smartphone via bluetooth with the Retra UWT app.

Retra UWT App allows you to:

  • Download firmware updates
  • Choose custom user modes
  • See basic information (number of flashes, current version, serial number, etc)
  • Read instruction manuals

You can download the Retra UWT app for free on Google Play and the App store.

Description of modes


The BATT/TEST mode allows you to check the battery status of your strobe. Test your strobe’s flash output or use it for creative lighting techniques with long exposure.


Retra Flash Pro Max emits a single pulse of soft light at the selected power level. You can fine-tune the strength of illumination with 13 power levels of ~0.5 F-Stop increments, giving you a total of ~7 F-Stops, without accessories.


Retra Flash Pro Max uses your camera’s calculations to determine the ideal exposure for the scene by using a pre-flash. You can adjust the relative power of the automatic exposure if you feel it was too high or low.


Retra Flash Pro Max is capable of emitting a long flash pulse, required for HSS photography. You can fine-tune the strength of exposure to suit your specific needs.


The U mode allows you to tailor your Retra Flash experience. Select your custom user mode by connecting your strobe with the Retra UWT App. You can choose between Smart SL, Manual Low Power, or LED Adjust modes.


If you find yourself in trouble, Retra Flash Pro Max is capable of emitting a morse code signal for help (SOS). This mode overrides any errors.

You can also flip the LED screen on the Retra Flash Pro Max by 180°, allowing you to use it in any orientation.


Retra Flash Pro Max features a pilot or guide light with two intensity levels, allowing you to find the ideal position for your strobes quickly and easily. You can also customize the intensity of each level with the LED Adjust mode in the Retra UWT App.

Pilot light feature is available in M, TTL, HSS, and U modes.

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Contact Us

Do you need any additional information?

If you have any additional questions regarding the specifications, use or compatibility of our Retra products, please don't hesitate to contact us.

Just fill in the form and we will answer any questions you may have. We usually answer within 24 hours.