Rebreather diver

ARMED TO THE TEETH

Automated safety tests, in-dive gas adjustments and situational predictions are just the tip of the iceberg that opens up rebreather diving for everyone.


Get automatic, choose manual. A rebreather built for all divers. While giant strides in automating the SE7EN+ have opened the world of recreational rebreather diving, equal attention has been given to designing a rebreather with full controllability. Manual gas injection, trimix blends, 100+ m deco diving to name a few, the SE7EN+ has it all.

EXPLORE THE SE7EN+ EDITIONS
SE7EN+ Sport edition

SE7EN+ SPORT

A FULLY CAPABLE SE7EN+ CONFIGURATION AT AN EXCEPTIONALLY AFFORDABLE PRICE. SIMPLE ENOUGH FOR A BEGINNER TO MASTER YET EXPANDABLE TO A TECHNICAL UNIT CAPABLE OF 100+ METERS.


Includes all necessary equipment for the start of your rebreather journey. The rebreather BCD makes the transformation from open to closed circuit a no brainer.

EU/International packages available


Customizable in our configurator

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SE7EN+ REC Edition

SE7EN+ REC

A PREMIUM SE7EN+ PACKAGE WITH OUR M28 COMPUTER AND COVER INCLUDED, FOR THE SPORTS DIVER WHO PLANS TO EXPLORE FURTHER.


The SE7EN+ REC edition includes both M28 computer and Solid-State Sensors as well as a cover making it ready for deeper and more technical diving, in style.

EU/International packages available


Customizable in our configurator

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SE7EN+ TEC Edition

SE7EN+ TEC

THE TEC EDITION PULLS NO PUNCHES. PERFECT FOR THE TECHNICAL DIVER WHO WANTS IT ALL. FULL MANUAL CONTROL WHEN NEEDED AND STILL THE CONVENIENCE AND UNPARALLELED SAFETY OF A SE7EN+.

Our most sophisticated rebreather, the SE7EN+ TEC edition, includes manual addition valves, inversion kit, handle and stand for the technical and experienced diver and those who wants it all.

EU/International packages available


Customizable in our configurator

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dive longer, more safely and closer to wildlife

Rebreather Basics
Rebreather diver Lake Baikal

ALL GOOD THINGS COME IN THREe


The Sport, Rec and Tec editions are perfect platforms on which to start and continuously build upon. The modularity of the SE7EN+ knows no limits, which is why any of the packages can be upgraded and modified as you progress, or you can configure to your unique setup from the start. All packages comes with a choice of oxygen sensors and cylinders. See the Tech Specs for more details.

HOW POSEIDON SE7EN+ TECHNOLOGY WORKS


All closed circuit rebreathers use oxygen, diluent (air/trimix), a breathing loop, counter-lungs, a mouthpiece to deliver the breathing gas, a scrubber to remove the carbon dioxide from the system and a method to replace the metabolized oxygen. That’s the easy part and where other rebreathers stop but Poseidon SE7EN+ technology really starts!


What makes the Poseidon SE7EN+ unique is the way in which it manages the gas in the breathing loop. The oxygen sensors detect the PPO2 in the breathing loop and solenoids automatically inject oxygen as required to maintain the appropriate PPO2 for the diver’s current depth. The SE7EN+ diver does not need to adjust PPO2 set points or manually maintain a set point; the SE7EN+ does it all for them.


The Poseidon SE7EN+ is an example of technology at its best; taking a complex process and making it beautifully simple. So simple, in fact, that the SE7EN+ diver can just enjoy the dive!

Rebreather Basics
Rebreather diver Lake Baikal up-side-down

Whenever. Wherever.

Resilence has always been one of Poseidon's conerstones, the SE7EN+ is no exception.


Carefully chosen light-weight and tough materials encase the precious components from the harshest of environments while reducing the weight and sixe for a comfortable fit and easier travel. A perfect balance between robustness and mobility.


Tested and certified for the icy blue waters of the north, to the vibrant reefs of the tropics, there are few places on this planet where the SE7EN+ dosn't excel. 

SE7EN+ E-Module

Better than the sum of its parts


A NEW ERA IN OXYGEN SENSING

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Plan dive analyse


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Poseidon Reef App

THE REBreather that grows with you

Aside from allowing easier maintenance and understanding of the system, modularity also brings with the major advantage of easily modifying and configuring your rebreather.


Our rebreather program contains a serius set of accessories and extras for everyone. Upgrade your rebreather as your diving skills progress.


You will never be limited by a SE7EN+

Rebreather diver Iceland

THE MOST CAPABLE REBREATHER


SERIOUS BRAIN POWER

RIGOROUS PRE-DIVE TESTS

Tech Specs

key advantages


While a rebreather isn’t the best choice for every dive and every diver, it is the best choice for many divers and many dives. Rebreathers have the following key advantages over traditional scuba / open circuit.


A rebreather system is less noisy than an open circuit system, making the interaction with marine life more intense and up close, as wildlife will approach you rather than swim away from you.


The duration of a dive on a rebreather system is generally much longer which means that you can either stay down longer in one dive or do several repetitive dives without the need to re-fill your cylinders. The reason for this is that you will not use up your gas as fast as on a normal scuba system, because you are re-using gas the whole time, making the rebreather 96% efficient in comparison to 4% efficiency during an open-circuit dive. Your gas costs will be reduced, especially when you venture into technical diving. No decompression time is far greater on the rebreather system as it makes sure you have the optimal gas mix at every depth, therefore minimizing the intake of nitrogen. If you are a certified Nitrox diver, you can compare it to having a nitrox blender on your back that makes sure that you have the best mix at every depth.


An open circuit system gives you cold and dry gas, but on a rebreather you will get moist and warm gas, which is much more comfortable to breathe while diving. There is no need for deep breaths because the loop is an extension of your lungs. You only need to make sure that you continually breath normal breaths. Your buoyancy will not be altered by the way you breathe; it will only be changed when you add gas to your buoyancy device.

Rebreather Basics
Rebreather diver Lake Baikal

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