Prism 2 Experience

Best Rebreathers

  • $4,995
  • Easy user interface and very advanced technology
  • User friendly, automated, travel easy, and has all benefits
  • True recreational Rebreather
  • $8,999
  • Lower resistive breathing effort
  • Electronics and the battery are housed on their own outside of the breathing loop
  • Primary HDD (Heads Down Display) is battery driven sequential LED, for continuous hands free monitoring of the oxygen levels.

A Prism 2 is a piece of breathing equipment that is specifically designed to help a person breath where oxygen is limited, and it also absorbs carbon dioxide. This technology is used in space, toxic environments, underwater atmospheres, mine fields, and places where harmful gases may be present. The Hollis Prism 2 is a new eCCR that has already proven itself to be an outstanding model in this field of technology. The Prism 2 has recently been released after many years of research and production studies. Divers choose the Prism 2 Electronic Closed Circuit Rebreather as their trusted partner to explore the underwater world. Here you’ll find our opinion of its main features, pros, cons, and our overall recommendation. Visit to find a great rebreather system.


There are many new features included in the new Prism 2 Rebreather, and these added features are extremely useful and quite different from other rebreathers you can find on the market today. The new version of Prism makes breathing very easy with features like these:

  • Electronic CCR (Closed Circuit Rebreather) technology
  • Primary Heads-Down Display (HDD): a battery driven LED for uninterrupted, hands free monitoring
  • Over-the-shoulder counterlungs for easier breathing
  • Selectable PO2 set points for pre-dive users
  • Lower resistive breathing exertion and more proficient scrubber use through radial scrubber design
  • Electronics located on the outside of the breathing loop
  • O2 supply lines and solenoid are external from the breathing loop as well, and O2 is safely vented, removing the risk of O2 spikes due to connection leaks
  • 40 hour battery life (in 70°F water temperature) with the standard 9V alkaline battery
  • Sluice drains at the base of each counterlung
  • Waterproof magnetic slide on/off switch included
  • 3 redundant O2 sensors for reliable O2 management


The new Prism 2 Rebreather supplies very comfortable, warm gas for breathing while diving at any depth. It never extends decompression time and allows both new and veteran divers to take advantage of its more efficient gas use.

The Prism 2 is made from ABS (Acrylonitrile Butadiene Styrene), providing for an improved scrubber and head instead of stainless steel versions that other rebreather models typically use. This is a positive enhancement because ABS has less thermal conductivity compared to aluminum and stainless steel. It also reduces dusting and channeling by dampening vibration and providing continuous compression.

Another positive feature of the Prism 2 Rebreather is its DSV barrel and brass-nickel-coated nuts attaching the hoses. The DSV is extremely comfortable because the DSV hover stays at eye level instead of floating up over the user’s head after removing the loop.

This product is made on reliable and flexible custom swivel regulators that provide very clean and streamlined hose steering. There are two regulators with an OPV (Over Pressure Valve) and an SPG (Submersible Pressure Gauge). All fittings and spares are US standard and designed to ensure maximum usefulness to the diver while under water.


The Prism 2 Rebreather has various advantages, and people get many uses from this product, but there are some drawbacks to this product. However, these are not as significant as its advantages.

It features an easy-to-remove scrubber, but there is no removable O2 tank in the Prism 2. Most divers found this missing element to be a bit annoying, but not overwhelmingly so.

There is no stand for any unit, and it causes the unit to sit on valves as it is unable to stand up on its own. There is the potential to the valves by doing this, but they are sturdy enough to hold up to careful, repeated use.

The Prism 2 Rebreather gives a diver three hours in 4°C water, but it is not an excessively large scrubber at 2.5kg.

You cannot enjoy your dive as much if you use a Tech Rebreather and use the explorer. When a diver uses the explorer, there is little he or she can do.

Many users see over-the-shoulder counterlungs as a disadvantage, but it also gives the appropriate counterlung position.


This rebreather was created from a lot of experiments in engineering and design concepts. It’s creative, innovative, and reliable in the sea or any freshwater atmosphere. People who have used the Hollis Prism 2 Rebreather have said that they would definitely trust the model to dive with this rebreather again, especially in an ocean environment or any other aquatic place to dive for an even longer period of time. If you think you want to buy a new product from the Hollis Prism series, you can visit their website or

Click here to find the list of best rebreathers in the market. 


One Response to “Prism 2 Experience”

  1. Dan July 24, 2015 at 9:23 am #

    I’m. P2 owner and have been blown away by this rugged and reliable little unit.
    The scrubber duration is actually 4 hours and I’m still alive having pushed this near to 5 many times.
    Not sure what you ment by it not having a removable O2 tank as of course it has to have to function.
    The counter lungs are very discreet compared to some fmcl units and coming from a bmcl unit I actually barley notice them.
    I also purchased a stand which was made specifically for the unit which makes all the difference.

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