I have an Oceanic Datamask for sale. Asking $600 + S&H. I have had it for about a year & a half. It has about 2 dozen pool dives, about 10 fresh water dives & about 6 salt water dives. It comes with the mask (with heads- up display), high pressure transmitter, mask case, download cable, & instruction books. I no longer have the software download disc, but it can be downloaded from Oceanic's web site. Cash, Check & Paypal are fine.