It s one of the best regulators at the moment. We have tested it at more than -80 mts!!!
Regulator apex 100
The controller is the best on the market, there is no doubt that the only complete regulator marketed APEX comes with: 1 - First Stage 2 - Stage 3 - Alternative Source 4 - transport bag is the only controller that comes bundled Marketplace the alternate source and I think the price would be nice if the bring it, just an opinion.