Dive Rite O2ptima Rebreather Shearwater Petrel 2




Dive Rite O2ptima Rebreather with Shearwater Petrel 2

The Dive Rite O2ptima Rebreather is a fully closed circuit, constant PO2, electronically-driven rebreather with built-in decompression ability.

Price Listed in US Dollars.  A second invoice will be emailed separately to adjust pricing for currency exchange rate.

Unique in the rebreather marketplace, the O2ptima is specifically designed for the rigors of cave diving where immediate surfacing is not possible. The resulting features are also highly desirable for wreck and deep ocean divers.

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The O2ptima’s design includes minimal risk of a caustic cocktail. Two water traps in the loop along with horizontal, behind-the-head positioning of the scrubber canister create a difficult path for water to travel. An even greater advantage is gained by using Micropore Extend Air scrubber cartridges, which do not contain dust. It is the dust that reacts quickly with water to form a caustic cocktail.

The O2ptima delivers excellent work-of-breathing that allows divers faced with strong flow or ripping current to breathe comfortably. Over-the-shoulder counterlungs  along with the scrubber positioned behind the head means gas has less distance to travel, so the diver does not have to work as hard to “pull” gas through the loop. This also allows the O2ptima to have smaller diameter loop hoses, which minimizes jaw fatigue.

A stainless steel frame and Rhinotec 600-denier polyester cover protects the O2ptima from tight cave squeezes and rolling boats. Hoses, regulators and tanks are kept neatly streamlined and away from potential snags inside a wreck or cave.

The O2ptima comes standard with the following features (see tech specs for details):

  • Over-the-shoulder counterlungs (Back Mounted CL Now Available as an upgrade)
  • Shearwater Divecan – Petrel 2 EXT Controller
  • Shearwater Divecan Heads Up Display (HUD)
  • Dive Surface Valve (DSV)
  • Automatic Diluent Valve (ADV)
  • Water traps
  • Dive Rite XT Regulators and hoses
  • AI R22 Oxygen Sensors
  • Choice of Dive Rite Transpac, Transplate or Regular backplate and Harness
  • CCR XT 40lbwing
  • 2 sizes of counterlungs either standard 2.5L or 3L over the shoulder lungs
  • Available with Optional Shearwater NERD Heads Up Display Computer

Buy Dive Rite Gear Online in Canada with Free Shipping from Dan’s Dive Shop, a Top Stocking Dive Rite Dealer.


Additional information

Weight30 kg
Dimensions92 × 61 × 61 cm

CCR XT Wing 40lb, CCR XT Wing Dual Bladder

Backplate Size

Transpac Double Extra Large, Transpac Extra Large Harness, Transpac Extra Small Harness, Transpac Large Harness, Transpac Medium Harness, Transpac Small Harness, Transplate Double Extra Large Harness SS, Transplate Extra Large Harness SS, Transplate Large Harness SS, Transplate Medium Harness SS

Dive Computer or BT Upgrade

No, Thanks, Shearwater Petrel EXT CCR

Cable Gland

Fischer Connector Only, No, Thanks


"Backmounted", "2.5L Standard", "3L Standard"


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