Mares Horizon Semi-Closed Rebreather (SCR)

Experience Longer, Lighter, and More Enjoyable Dives with the Mares Horizon Semi-Closed Rebreather!

Imagine diving with longer bottom times, quieter underwater exploration, lighter equipment, and simpler gas management — all while reducing your environmental impact. With the Mares Horizon Semi-Closed Rebreather (SCR), this is no longer just for elite technical divers — it’s now accessible to recreational divers who want to take their underwater adventures to the next level without the steep learning curve of a full closed-circuit rebreather.

Built in collaboration with rEvo Rebreathers, the Mares Horizon SCR combines cutting-edge technology with simplicity, comfort, and affordability. Whether you’re an avid reef explorer, underwater photographer, or simply want to extend your dives in warm, shallow waters, the Horizon opens new diving possibilities like never before.


Why Choose the Mares Horizon Semi-Closed Rebreather?

Longer Dive Times
The Horizon SCR lets you stay underwater significantly longer than traditional open-circuit systems. Thanks to its efficient gas recycling system, you use much less gas on every dive — allowing extended no-decompression times, longer bottom durations, and fewer surface intervals. Perfect for photographers, videographers, and wreck or reef divers who want more time to explore.

Lightweight, Travel-Friendly Design
Unlike full closed-circuit rebreathers that are heavy and complex, the Horizon is lightweight, compact, and airline-friendly — making it the ideal travel companion for dive holidays. Its simple design means you can bring the system wherever your diving adventures take you, without the hassle of transporting cumbersome gear.

Incredibly Quiet for Close Encounters
One of the standout features of the Horizon SCR is its silent operation. With fewer bubbles and reduced noise, you can approach shy marine life — turtles, sharks, dolphins, and fish — without scaring them away. This makes it a dream tool for underwater photographers, filmmakers, and anyone who wants a more immersive and peaceful diving experience.

Simple and User-Friendly Operation
Unlike complex closed-circuit rebreathers, the Horizon is designed for ease of use. Pre-packed scrubber cartridges, straightforward electronics, and an intuitive interface make setup, operation, and maintenance simple — even for divers without technical rebreather experience. No advanced gas mixing or constant manual adjustments required.

Affordable Entry into the Rebreather World
The Horizon SCR provides an economical stepping-stone into the world of rebreathers, without the high costs of full CCR units or expensive mixed gases. Using Nitrox as its breathable gas, it stays within recreational depth limits while offering all the major benefits of rebreather technology.

Enhanced Safety Features
The Horizon SCR comes packed with smart safety systems, including multiple sensors, real-time displays, and alarms that constantly monitor breathing gas, loop integrity, and scrubber life. You can dive with peace of mind knowing your system is looking after you.

Environmentally Friendly Diving
Using less gas and producing fewer bubbles means you’re reducing your impact on sensitive marine ecosystems. The Horizon allows you to explore fragile environments more responsibly and leave less of a footprint.


Ready to Change the Way You Dive Forever?

The Mares Horizon Semi-Closed Rebreather offers an exciting, simple, and affordable path into the world of rebreather diving — without the complexity of full technical systems. Enjoy longer dives, closer wildlife encounters, and quieter, more relaxed underwater exploration.

Visit our store or shop online today to learn how you can upgrade your diving experience with the Mares Horizon SCR. Dive longer. Dive quieter. Dive smarter — with Central Coast Divers!