Imagine the perfect light source

It's all about improving our best

The new Retra Flash Series is the highest expression of our endless pursuit for the perfect lighting tool for underwater photography.

The next level of Underwater Strobe Technology is here:

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Retra Flash Pro Max

The new Pro Max has the highest power output of the new Retra Flash Series, a new OLED back panel display and is the ultimate lighting tool for any underwater photographer.

Retra Flash Prime+

Featuring the same lamp and reflector design as the Pro Max but with 50% less power output and without the back panel display. The Retra Flash Prime + provides smooth lighting in any condition.

Retra Flash Pure

The Pure is our entry level strobe with a smaller lamp and reflector that will satisfy the needs of every beginner or a serious macro photographer.



Retra Flash Pro Max

Retra Flash Prime +

Retra Flash Pure


140 Ws

90 Ws

70 Ws

Power Source

4x / 8x AA Batt.

4x / 8x AA Batt.

4x / 8x AA Batt.


Monolithic Aluminium Alloy

Monolithic Aluminium Alloy

Monolithic Aluminium Alloy

Weight (1)

878g / 995g

838g / 958g

838g / 958g


102,5 mm

102,5 mm

102,5 mm


148 mm

148 mm

148 mm

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

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

Read more about our 4th generation Retra Flash Series by clicking the button below.

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Bayonet Mount

The front of the Retra Flash features the classic bayonet mount with a lock mechanism for safely attaching all existing Retra accessories

Sturdy & Elegant design

The monolithic aluminium alloy casing is made to withstand depths up to 100 meters and offers superior cooling and is more resistant to vibration

Circular Flash-tube

The circular flash-tube offers high quality of light output with softer and more evenly distributed illumination

Optical Connector

The new optical triggering system is even more reliable than before, able to read optical input even from sub optimal fiber optic cables.

Seamlessly compatible with the Inon threaded connector and the Sea&Sea plug connector

Backlit OLED display

The backlit OLED display shows you all necessary information in one spot - clearly visible in any lighting condition.

Info: current mode, power setting, battery life, recycle time

Leakage Detection

Leakage detection system warns you if water ever gets into the battery compartment

Mode Button

The Retra Flash has a variety of modes to choose from:

  • BATT/TEST (battery level & test)
  • M (manual mode)
  • TTL (through the lens mode)
  • HSS (high speed sync mode)
  • U (user defined mode)
  • SOS (emergency signal)

Engineered to Perfection

For over a decade, a group of engineers and underwater photographers have teamed up with a single goal in mind: develop a true lighting tool for underwater photography.

To reach this goal, we continuously examined feedback from photographers during every step of the development process. The end result is a travel friendly strobe that delivers top-tier performance in any lighting condition.

So, whether you're a professional or just diving into the world of underwater photography, the Retra Flash will be your trusted companion on all your underwater adventures.

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4th Generation of Underwater Strobe Technology

With our 4th generation series, we listened to all your comments and made changes to the Retra Flash to better suit your needs.

  • Electronics were completely redesigned with efficiency and performance in mind
  • 4th Gen. Retra Flash uses less power for the same light output
  • Optical triggering system is more reliable and able to read optical input even from sub-optimal fiber optic cables

Intuitive Back Panel Controls

We've spent hundreds of hours analyzing feedback from photographers on the field and tweaking our designs to bring you a back panel you are immediately familiar with.

We're also introducing a brand new innovation that is the centerpiece of the new Retra Flash Pro Max. The OLED display shows relevant information based on selected mode.

The information is uncluttered and clearly displayed - even in sunny shallow waters!

Information that can be seen on the display:

  • Current mode
  • Power setting
  • Battery life indicator
  • Capacitor recycle indicator
  • And more!

The control dials are more robust to allow easy operation and more control when using gloves.

A reliable power source is the key

Our 4th generation Retra Flash models have a completely redesigned battery compartment that can now hold 8x AA cells without the need for a separate battery compartment, when using the Booster.

The Retra Flash is also the only underwater strobe with a built-in leakage detection system that warns you if water gets into the battery compartment.

Capture priceless moments with the new Retra Flash series

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Cutting-edge signal processing system

Our 4th generation Retra Flash Series feature the most advanced optical signal processing unit ever fitted to an underwater strobe.

The new optical signal processing unit can filter and detect a signal in almost any condition. The signal is dissected with microsecond precision and analysed with laboratory grade algorithms that run seamlessly in the background at all times.

Photons that inspire

We made no compromise when it came to light output and power. The new Retra Flash triggering system is our most efficient design yet.

  • New circular flash tube,
  • New reflector design
  • New frosted dome design

The Retra Flash offers soft and evenly distributed illumination of the subject, providing stunning results in a variety of conditions.

For more information on the quality of light, read the full article by clicking the button below.

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Retra UWT App

The world's first underwater strobe with smartphone connectivity

We wanted our users to have as much control and information on the performance of their Retra Flash as possible. That's why we made the Retra UWT Application (for Android & iOS) that can be paired with your Retra Flash via bluetooth.

The Retra UWT App allows you to:

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

Everything begins with LIGHT

Become a master of underwater lighting with the new Retra Flash series.

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Why choose Retra?

Retra UWT was established 2012 with the goal of designing the most advanced underwater strobe that can deliver top-tier performance in any condition and for all styles of underwater photography.


– Daniel Norwood, Dive Photo Guide

"After several months of constant use, I have nothing but good things to say about the Retra Flash PRO, and they have now become my go-to flashgun for the majority of my underwater photography work."

– Mike Bartick, Reflector review

"It is fun to use and perfectly suited for all-around use, including macro, wide angle, close focus wide angle, and oh yeah, blackwater!"

– Walt Stearns, Scuba Diver Destinations

"With the Retra Flash Prime, the quality and consistency of the light on subjects I was seeing was far more pleasing. The lighting from the Prime’s fully circular flash tube was impressively even..."

– Nicolas Remy, UWP Magazine

"I would buy them again if presented with the same choice."

The Bayonet Mount

We wanted to make a versatile underwater strobe that could perform in any condition and for any style of underwater photography.

The Retra Flash features a bayonet mount at the front of the strobe that allows you to attach a range of different accessories, transforming the Retra Flash into a truly customizable light source.

The bayonet is also designed to be future-proof, as the dimensions of the bayonet remain the same on all versions of the Retra Flash. This way any accessory you buy now, will never become obsolete.

All the Accessories

We offer a wide variety of accessories that unlock the full creative potential of the Retra Flash and help protect it from damage. So, whether you're a fan of wide angle shots or like to get up close and personal with your subjects, there's an accessory for every occassion.


The selection of Diffusers change the color temperature, softness and light output of the Retra Flash. We offer 4 different options to choose from.

Reduction Ring

The Reduction Ring narrows and focuses the light beam. It helps reduce backscatter for macro or low visibility photography.

Macro Rings

The Macro and Super Macro Rings reduce the angle of light for narrow angle photography. They are perfect for getting up close and personal with your subjects.


The Reflector boosts the light output by +1 F-stop (in water) and narrows the angle of light for more precise light control.


The Bumpers are attached to the front and the back of the Retra Flash to protect the edges against damage during rough seas.

Protective Ring

The Protective Ring does not impact the size or quality of light. It's main task is to shield the dome from damage.

The Booster

The Booster powers up your Retra Flash by giving space for 8x rechargeable AA batteries, that doubles battery life and reduces recycle time by half.

The new Booster is a singular piece that reduces chances of leakage and allows quick and easy exchange of the lid and batteries.

The new design is 50% lighter compared to the previous models of Supercharger.

Its lightweight and compact design, paired with the built-in leakage detection system, make it a must-have accessory for the 4th generation Retra Flash.


Increase in Battery Life

With the Booster, you can use your Retra Flash for longer underwater photography sessions.


Shorter Recycle Time

The Booster decreases the recycle time of the Retra Flash by half, enabling fast action shooting.

Light Shaping Device

An accessory worth a special mention is the Retra Light Shaping Device (LSD). Due to its modular design, the Light Shaping Device can be easily paired with other flash devices by simply changing the mounting module.

When paired with the Retra Flash, you can also turn on the guide or modeling light on the strobe to see exactly where you're aiming your snoot. This way, there's no guesswork involved when positioning your flash light.

And with the extra slot for inserting different masks, you can easily control the diameter and shape of your light, giving you endless creative potential.

To read the full article about the Light Shaping Device, click the button below.

Read Full Article

The Retra Vault

Dive deep into Retra's Vault to learn tips and tricks on how to make the best use of your Retra Flash and stay up to date with the latest news and firmware updates from the Retra team.

Enter the Retra Vault
4th Generation Retra Flash Series

4th Generation Retra Flash Series

With our 4th generation Retra Flash Series, we wanted to push the limits of innovation and give our fans a user-friendly underwater strobe that could deliver top-tier performance in any situation.

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Celebrating 10 years of innovation with a new Retra Flash

Celebrating 10 years of innovation with a new Retra Flash

Marking our 10th anniversary with the most advanced underwater flashgun we've ever made....

Light your way into epic underwater adventures with the Retra Flash.

Start Your Adventure

Do you need any additional information?

If you have any additional questions or concerns, feel free to contact us by filling out the form and we'll answer as soon as possible. We usually answer within 24 hours.

You can also check out our FAQ page here.