Most for Customization
Hollis Prism 2 CCR

The Hollis Prism 2 is a pretty sleek-looking unit, and it has got some serious technical chops to boot. Plus there are a few options for divers, such as choosing between electronic or manual control options and back-mount or front-mount counter lungs. Explore open seas, caves, or wrecks with ease.

Tested by ANSTI at 100 meters, the Prism 2 had the lowest work of breathing of any mixed gas CCR unit. Tanks and valves will need to be purchased separately.

Learn more about the Hollis Prism 2 here.

Our Overall Review

4.6

Things we like:

  • check-mark
    Highly customizable, plenty of different options for add-ons, configurations, and dive styles
  • check-mark
    Rear-mounted radial scrubber
  • check-mark
    Excellent work of breathing
  • check-mark
    CE approved
  • check-mark
    Hollis has an excellent reputation for after-sales support

Things we don't like:

  • check-markOne of the finickiest scrubbers to pack in the industry
  • check-markBOV is sensitive to freeflow on the surface

Where to buy:

hollis-prism-2-ccr-product-photo.jpg

Hollis Prism 2 CCR

Specs & Features

  • Unit weight of 47 pounds in standard configuration
  • Split counter lungs
  • Both front and back-mount counter lung configurations
  • Counter lung drains to easily remove water during a dive
  • All gas lines external to the breathing loop
  • Automatic diluent valve
  • Manual diluent valve
  • Air, Trimix, and Heliox suitable
  • Manual oxygen valve for manual PPO2 adjustments
  • Harness and BC or backplate
  • Compatible with 2 and 3-liter cylinders
  • LED display for an easy to monitor system status
  • PPO2 displays for each sensor
  • External power switch
  • Push-button O2 calibration
  • Large secondary display
  • Supports diluent switching and multi-gas dive plans
  • Two-button OC bailout
  • CNS tracking for real-time oxygen exposure
  • User updatable software
  • Stand included with purchase
See the complete list of the best Rebreather here!

Related Reviews

Our Overall Review

4.6

Things we like:

  • check-mark
    Highly customizable, plenty of different options for add-ons, configurations, and dive styles
  • check-mark
    Rear-mounted radial scrubber
  • check-mark
    Excellent work of breathing
  • check-mark
    CE approved
  • check-mark
    Hollis has an excellent reputation for after-sales support

Things we don't like:

  • check-markOne of the finickiest scrubbers to pack in the industry
  • check-markBOV is sensitive to freeflow on the surface

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