Synchron Ti300M Poseidon

The Poseidon  Synchron collaboration watch combines design references from classic professional dive watches with visual cues linked to Poseidon’s long-standing role in Scandinavian diving equipment. 

Synchron Ti300M Poseidon
Dive Watches
Poseidon

Developed in partnership with Synchron, the watch draws inspiration from vintage tool watch aesthetics while including modern materials and construction.

The case is built in stainless steel with a pronounced cushion-shaped profile typical of dive watches of the 1970s. A unidirectional rotating bezel and high contrast dial layout prioritise underwater readability, with luminous hands and markers designed for dim-light conditions. The watch is water-resistant to professional diving depths and features a screw-down crown and a robust case construction.

Press Release
Received from: Poseidon Diving Systems

Experience Poseidon at Buddy Dive Bonaire – November 2026

Poseidon

Imagine yourself diving the pristine shores of Bonaire, the shore diving capital of the world — warm water, easy conditions, and spectacular marine life — all together with the global Poseidon diving community.

In November 2026, Poseidon Diving Systems invites you to a unique dive experience in collaboration with ScubaTravel Scandinavia and Buddy Dive Resort.

This trip is for you if you are:

Poseidon Diving Systems recalls Poseidon M28A dive computers

The recalled Poseidon M28A Dive Computers may stop working as a result of water ingestion, which can result in a depth sensor that is not working properly and lose dive data for the diver, creating a risk of injury.

Poseidon M28A dive computer
Dive Industry News and Matters
Equipment
Poseidon

Poseidon M28A dive computers are subject to this recall. They continuously calculate and provide the data that divers require. The Poseidon SE7EN Rebreather with the M28A can be used separately or together. This recall only applies to dive computers with serial numbers that begin with "M28A-". On the rear of the recalled dive computers are the serial number and two metallic wet-switches.

Press Release
Received from: Poseidon

Poseidon Reef App Launch

Poseidon

Plan

Plan your next diving adventure in the simple to use, easy to navigate interactive planner. Diving an open circuit or rebreather? Doesn't matter. The app has different dive modes and deco models available to match your setup and preferences regardless of level.

Choose between single dives or a series of dives and let the app calculate needed technical stops. Easily tune the gradient factors to see the difference in dive time and get a summary of the result as well as a detailed list of run time and gas switches if applicable.

Poseidon Announces Upgrade Option For MKVI Rebreathers

Poseidon has announced via social media that they are offering an upgrade for MKVI units.

Equipment
Poseidon

The (34,000 Swedish Krona) package consists of a SE7EN E-module, two HP-sensors and a HUD.

The deadline for this upgrade is 24th December 2017 and it cannot be combined with any other offers. The old MKVI e-module must be returned to Poseidon and the owner will also need to either buy a M28 or a Paddle with a can connector.

Poseidon has also confirmed that there will be a minor upgrade for current SE7EN owners so that their rebreathers are solid state sensor ready.

Poseidon M28 Computer Update

Poseidon has issued the following statement regarding their new computer

Poseidon M28 dive computer, X-Ray Mag, Rosemary E Lunn
Equipment
Poseidon

"Due to changes in certification standards and changes in approvals of key electronics components that in turn have led to delays in the CE certification process, the expected delivery time for the first batch of M28 Computers will now be in August.

We sincerely apologize for this delay, however it is out of our hands and we are doing everything we can to keep things moving forward swiftly."

X-RAY MAGAZINE FEATURE

Taking the SE7EN for a spin

The nascence of recreational rebreathers was just waiting to happen. Spurred on by rapid advances in technical diving, new materials and technology, coupled with cost reductions, the allure of long and quiet dives, with vastly improved non-deco times, had to seep from the technical communities to recreational diving, leading to the design of a new generation of closed circuit rebreathers aimed primarily at recreational divers. But how far have we come to making closed circuit rebreathers a common sight along our shorelines?

Words:
Peter Symes
Images:
Peter Symes
Download the full article as pdf ⬇︎
Equipment

Coming up first on the agenda was taking a closer look at the innards and getting familiar with all the components and how they came together. Looking at the unit as it was laid out gutted on the table, it struck me how compact everything was. The breathing hoses, for example, of which there are four short identical ones, are each just about a foot long.

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