JJ CCR Rebreather Review

Torben Lonne
By Torben Lonne – Editor and Co-founder at DIVEIN.com
JJ CCR rebreather shown from the front and back with counterlungs, breathing hoses and twin cylinders

Where to buy

The ever-popular JJ CCR can be seen wherever rebreather divers are. In many ways, it’s somewhat like the 4X4 of the rebreather world. The unit is machined out of solid anodized alloy, and comes with an axial scrubber as standard. When your diving progresses in line with your skill level, there is an option to upgrade the scrubber to a radial model.

You can equip the JJ with up to 4 tanks of 2 to 12 liters of different gas mixtures and it comes with APEKS first stages. A CE rating means this unit is certified for safety by a third-party agency.

You can find more info on the JJ CCR’s specs and features here. Note that there are differences between the CE model and the International model in the manual diluent valve.

Things we like:

  • Plenty of options for after-market add ons and additions
  • Common unit so easier to find service persons and centers
  • Stands well by itself
  • Three lights on the HUD indicate each cell
  • A good unit for beginner CCR divers

Things we don't like:

  • The JJ is BIG, not ideal for travel but that said, plenty of divers still find ways around this
  • Only a back-mounted counter lung option, not customizable like some units

Specs & Features

HousingRobust aluminum housing
Tank capacitySecure up to four tanks
ScrubberUser repackable soda lime canister
StandStand is heavy-duty
HandleIntegrated handle
Counter lungsBack-mounted counter lungs
Redundant power supplyOne battery for the controller, one battery for the HUD and two parallel batteries for the solenoid.
ADVIntegrated Automatic Diluent Valve (ADV)
DSVDive Surface Valve (DSV)
O2 valveManual oxygen supply valve
Diluent valveManual diluent supply valve with the option to feed in external gases
HUDIndependent Heads Up Display (HUD) with real-time PPO2 display for all three sensors
ComputerIntegrated Shearwater multi-gas decompression computer in the controller
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