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About Mares Proton Metal Octopus

Protons second stage is made of nickel and chrome-plated brass These materials offer a number of benefits: ruggedness and thinner walls which allow compact dimensions obtained without using smaller-diameter diaphragms; this result in reduced water drag The second stage ha an anti-freeze function, which is enhanced by the "radiator action" of the metal

All Mares second stages are a reliable downstream valve design and offer the unique patented Vortex Assisted Design (VAD) system The air bypass tube conveys air to the mouthpiece creating a swirling vortex with a low pressure area in the center that keeps the diaphragm down during inhalation, for very sensitive and easy breathing at all depths

The second stage cover features the new "mesh-grid" system for water inflow and outflow, which provides a further performance improvement The patented mesh design of the second stage cover reduces the pressure of water flowing onto the regulators diaphragm and minimizes free-flow Even in a strong current it eliminates the need for a knob to de-tune your air delivery system- advance technology through basic physics

Furthermore, the compact and ergonomic exhaust tee ensures superior hydrodynamic performance and reduced exhalation resistance The mouthpiece is made of soft hypoallergenic silicone: limiting jaw fatigue and offering a secure fit even after very long dives The Proton Metal Octopus comes with a limited lifetime warranty
Click below to view various Mares tutorial videos for the Proton Metal Octopus
VAD System Demo
Mesh Grid System Demo
All Metal Technology Demo

Warranty Information

This product has a limited lifetime warranty.

www.mares.com
(800) 874-3236

Mares Proton Metal Octopus Features

  • Made of Nickel and Chrome-Plated Brass
  • Vortex Assist Design (V.A.D.) System
  • New "Mesh-Grid" System
  • Compact and Ergonomic Exhaust Tee
  • Soft Hypoallergenic Silicone Mouthpiece
  • Oversized Purge Button
  • 39.4" (100 cm) Superflex Hose with 3/8" Threads
  • Compliant with the Recommendations of European Regulation EN 250
  • Downstream Valve
  • Limited Lifetime Warranty

Mares Proton Metal Octopus Specifications

2'Nd Stage Type
Downstream Demand
Materials
Chrome Plated Brass, Silicone Rubber
Hose Thread
3/8"
Hose Length
39.4" (100 Cm)
Total Weight
14 Oz (399 G)
Mfr #
SKU
MRSPMO

Proton Metal Octopus Customer Reviews

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Mares Proton Metal Octopus
 
4.8

(based on 6 reviews)

Ratings Distribution

  • 5 Stars

     

    (5)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Comfortable (3)
  • Comfortable mouthpiece (3)

Cons

    Best Uses

    • Warm water (3)
      • Diving Type:
      • Drift diving (3), Open water diving (3)

    Reviewed by 6 customers

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    Displaying reviews 1-5

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    5.0

    Better than most primary regs

    By Pugsly

    from Phila, PA

    About Me Advanced

    Pros

    • Comfortable Mouthpiece
    • Easy To Use
    • Reliable

    Cons

      Best Uses

        Comments about Mares Proton Metal Octopus:

        I bought this to use primarily because I dive in cold water. It turned out to be better than the expensive primary reg I had at the time (Zeagle Flathead). I absolutely recommend this octo for the sake of your buddy who may have use it some day.

        • Diving Type:
        • Cave Diving, Drift Diving, Night Diving, Open Water Diving, Wreck Diving
        • Was this a gift?:
        • No

        Comment on this review

         
        5.0

        Perfect, Durable, Metal Octopus

        By JavaDiver

        from Jakarta, Indonesia

        About Me Beginner

        See all my reviews

        Verified Buyer

        Pros

        • Comfortable Mouthpiece
        • Does Not Leak
        • Reliable
        • Slim Design

        Cons

          Best Uses

          • As Primary

          Comments about Mares Proton Metal Octopus:

          I use a Mares Proton Metal for my primary reg and love it, so I ordered this Octo as a backup. It's a great, all metal design. Never had any free-flow issues. A little more expensive than other regulators, but for me, worth it. It's identical to my primary so no difference when I need to switch. Also, although it's metal, as a second stage it's relatively small and lightweight.

          • Diving Type:
          • Drift Diving, Open Water Diving
          • Was this a gift?:
          • No

          Comment on this review

           
          5.0

          Very Pleased

          By RNG84

          from San Antonio, TX

          About Me Casual/ Recreational

          Verified Buyer

          Pros

          • Comfortable Mouthpiece
          • Easy To Use
          • Slim Design

          Cons

            Best Uses

              Comments about Mares Proton Metal Octopus:

              Solid.

              • Diving Type:
              • Drift Diving, Open Water Diving, Wreck Diving

              Comment on this review

               
              4.0

              Great as a 2nd Stage or an OCTO

              By chuck

              from killeen, TX

              About Me Advanced Diver

              See all my reviews

              Verified Reviewer

              Pros

              • Comfortable
              • Effortless Breathing
              • Nitrox Compatible

              Cons

                Best Uses

                • Cold Water
                • Extreme Depths
                • Warm Water

                Comments about Mares Proton Metal Octopus:

                I took some advice from here and purchased the Octo and put it on as my 2nd stage (use an Air2 on my BCD or a Mares Viper as my octo). I mounted it to a Scuba Pro MK17 1st stage and it works like a charm...also the service kit for the Proton Metal (as a 2nd stage) is the same (except for the Black vs. Yellow coloring; however, the longer Octo hose works great to reduce the hose pulling the regulator out of your mouth. It is simple to adjust, if you know what you are doing (no exterior knob). I am still trying to find a socket deep enough to reach the adjustment...I have to take the face off to adjust it with a combo wrench right now.

                Comment on this review

                 
                5.0

                Magnificent Octo

                By shaner

                from Omaha, Nebraska

                About Me Advanced Diver

                Verified Buyer

                Pros

                • Adjustable
                • Breathability
                • Comfortable

                Cons

                  Best Uses

                  • Cold Water
                  • Professional
                  • Recreation
                  • Warm Water

                  Comments about Mares Proton Metal Octopus:

                  This is the most perfect Octo you can find. Reliable, metal, light weight yet performs heavy duty. I also have Mares Abyss for main Reg and this is perfect because when my jaw gets tired I switch to this one and have almost no drop off in performance...much beter than non-metal proton Octo.

                  Also, cheaper than proton Ice Metal...for an Octo, you can't go wrong here.

                  Comment on this review

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                  Questions about this item:

                  Shopper  Why Did You Choose This?
                  KEITH W  Small size and light weight. A great reg.
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