Mares Horizon A revolutionary approach
Discover How the Mares Horizon Semi-Closed Rebreather Works — and Why Every Component Makes Your Dive Longer, Lighter, and Safer!
The Mares Horizon Semi-Closed Rebreather (SCR) is changing the way recreational divers explore the underwater world. But what makes this system so revolutionary is how its smart, purpose-built components work together to deliver effortless diving, longer bottom times, and safer adventures — without the complexity of a full closed-circuit rebreather (CCR).
Let’s take a closer look at how the Horizon’s components come together to create the perfect semi-closed rebreather system — simple, reliable, and designed with the diver in mind.
1. Breathing Loop & Counter Lungs: The Heart of the System
The Horizon SCR’s breathing loop allows you to inhale and exhale into a closed gas circuit, rather than wasting gas into the ocean as in a traditional open-circuit system. The unit features large counter lungs, cleverly mounted on the chest to keep your buoyancy stable and trim perfect.
These counter lungs reduce breathing effort by storing your exhaled gas, which is then scrubbed and refreshed before each breath — delivering smooth, low-resistance breathing throughout your dive.
2. Scrubber Cartridge: Clean, Safe Breathing Gas
At the core of every rebreather is the CO₂ scrubber cartridge, and the Horizon uses a user-friendly, pre-packed scrubber. This cartridge removes harmful carbon dioxide from your exhaled breath before it’s recirculated.
Unlike traditional rebreathers that require messy manual packing of scrubber material, the Horizon’s cartridge is pre-filled for easy, clean replacement — saving time and ensuring consistent performance on every dive.
3. Gas Supply & Nitrox Integration: Simplicity Without Complexity
The Horizon SCR uses standard Nitrox cylinders (40-99% oxygen), eliminating the need for expensive or complex mixed gas blends. It automatically adjusts gas delivery based on depth and workload, enriching the loop as needed for optimal oxygen levels while conserving your supply.
You carry two small Nitrox cylinders — both compact and lightweight — making the unit travel-friendly and easy to handle. This setup also keeps the system within recreational depth limits, while greatly extending dive duration compared to open circuit.
4. Electronics & Heads-Up Display: Constant Monitoring for Safety
The Horizon features an integrated electronic system that continuously monitors gas quality, loop integrity, and scrubber life. Critical data is displayed on a bright, clear front-mounted screen — easy to read, even in low visibility.
It also includes an intuitive Heads-Up Display (HUD) that gives you instant status updates, so you know your system is functioning perfectly without distractions. Alarms for oxygen levels, CO₂ buildup, or system faults ensure you’re always diving safely.
5. Lightweight, Modular Design: Travel-Ready and Comfortable
All these components are packed into a streamlined, lightweight frame — far less bulky than a full CCR. The Horizon’s modular design makes it easy to assemble, transport, and clean. No heavy steel backplates or complicated oxygen cylinders required — just grab your Horizon and go.
Ready to Dive Longer, Quieter, and Smarter?
The Mares Horizon SCR’s carefully engineered components work together to give you longer dive times, quieter breathing, unmatched comfort, and enhanced safety — all with simplicity that even recreational divers can enjoy.
Visit us today to see the Horizon in action — and learn how its advanced components can completely transform your diving experience. Dive light. Dive safe. Dive Horizon.