Check the listing for details. Oceanic Transmitter for Atom 3.1/ OCi / Datamask Scuba Diving Computer Equipment. Condition: Used. Listed at 249.98 USD. Quality, versatility, and price - What more could you ask for?. Compatible with all Aeris, Hollis and Oceanic hoseless air integrated computers. Hose-less transmitter only. There is little to no wear shown, and are in great condition.