Hi Guys sorry for this second question - is this computer the atmos ai v.2 ( demo I understand) or is it an earlier model thanks for your time tony
Hello Tony, Thank you for your inquiry! The Aeris Atmos AI Air/Nitrox Dive Computer ´´Demo´´ model is a stand alone Air Integrated v2.0 computer without a compass. http://www.scuba.com/scuba-gear-48/009945-a/Aeris-Atmos-AI-Air-Nitrox-Dive-Computer-Used-Open-Box-Like-New.html You are able to add a QD hose with the Aeris High Pressure Dive Hose Quick Disconnect. http://www.scuba.com/scuba-gear-67/008905/Aeris-High-Pressure-Dive-Hose-Quick-Disconnect.html Please contact SCUBA.com for price and availability by calling 1-800-247-2822 or 949-221-9300.