*Please Configure and Order your Rebreather through our BART System. This is not to order the unit.* The Defender is an enhanced version of our world famous rebreather. It comes fully loaded with a full range of new features. Available as a complete unit or as an upgrade to existing units. The Defender utilizes the SG-1 electronics package to maintain the set point and control the solenoid. The standard unit includes a radial scrubber, Shrimp BOV, removable O2 cell cartridge, Quick Loc attachments on all breathing hoses and at the BOV. MAVs for both O2 and Dil, bayonet head fitting, 3 liter O2 and Dil tanks, choice of BMCLs or OTSCLs, backplate, and wing, primary and secondary handsets, HUD, Metal Sub tank brackets, first stage regulators, and 3 O2 cells. Electronic package comes standard with SG-1 electronics as a primary with hi-rez, color TFT screen. Secondary handset such as Shearwater Petrel, Heinrich Weikamp OSTC or other constant PO2 computer offers redundant PO2 monitoring. All cables connecting to the head of the Defender CCR connect with an industrial grade, stainless steel water blocked connector rated for 5000 connections. In order to help you through the process of building your CCR configuration and seeing how the options affect the overall price, we have built BART (Build A Rebreather Tool). With this online tool you can choose all the different configuration options, change them around and see what might be the best fit for you. Here is a link to our BART: https://ccr.sub-gravity.com/build-a-rebreather/