At Mexico Underground we offer all levels of training on the JJ-CCR via both TDI and IART. JJ-CCR Rebreathers are available to hire for students wishing to take their training before buying their own unit.

About the JJ-CCR

The JJ-CCR Rebreather was designed and tested since 2006 our instructors have been involved in training divers on this unit since its launch. The JJ-CCR Rebreather is designed Following a K.I.S.S philosophy and over recent years has been upgraded with options included additional Manual add valves, CE and International editions and the integration of the Shearwater CANBUS electronic options. The unit is very solid in construction and very user friendly the current price excluding shipping, training and duty tax is around 7,000 euro’s.

The JJ-CCR comprises of the following components:

  • Aluminum Canister designs allowing for multiple cylinder configurations.
  • Shearwater Petrel CANBUS Constant PPO2 controller.
  • PPO2 HUD
  • Unique back mounted counter-lung design.
  • O2 and Diluent manual addition valves with off-board pluggable gas option.
  • Axial and Radial scrubber options.
  • Automatic Diluent addition valve.
  • Live Decompression trimix enable dive computer

“Redundancy is very important, separate batteries for handset, HUD and solenoid, none of them inside the loop! If the handset goes down you must be able to fly it manually on the secondary (HUD) and that should be as unaffected as possible by the failing of the primary.
The electronics must be easy to understand, give some warnings but not give the “auto pilot” effect of some of the other units. The user MUST be made to feel he/she is the only one in control!

The rebreather itself must be strong, versatile, reliable and easy to use, maintain and service. There should be easily obtained parts that can be replaced in the field if needed (E.g. standard scuba hoses). There should be a choice of configuration and it support a wide range of cylinders (3, 5, 7, 10 or 12 liter) without the need of special parts to attach them.

It needs to be priced fairly, not stupid money but not cheap as chips either. But most of all it should have sound scientific test data to back up the performance claims. A few guys diving it and saying “well I am still alive so it must be ok” is not good enough! We have tried REALLY hard to do all of that!!”
(Dave Thompson, Factory IT – 2009)

The JJ-CCR has grown in popularity to become accepted as a superb Rebreather since it hit the market and continues to grow number of end user all over the world. If you are considering purchasing a JJ-CCR it might not be a bad idea to train on a hire unit this way giving you the chance to try before you buy.

Our Head Rebreather trainer Matt has been diving the JJ-CCR Rebreather since 2010 with over 2000+ dives in a range environments and caves around the world.He has taught over 80 people to dive on the unit since matt became a JJ instructor and is able to conduct training at all levels here in Mexico.