Link to Oceanic website
The Atom is a fully integrated dive computer from Oceanic. It is a watch-style wrist mounted computer. Air is integrated via a wireless link to the transmitter 'dongle' that attaches to the first stage of your regulator.
I have to say, I'm loving the thing. I didn't realize how much easier diving would be with the computer mounted on the wrist.
Previously with gauges and computer on the hose on the left, I was juggling inflator, gauges, compass while diving. Now things are a lot more evenly distributed. Checking air and depth is just a quick flick of the wrist away, without needing to drop inflator or compass from the left hand.
Given the new found freedom of my left hand, I have taken the opportunity to move my compass to a retractor on the left. This also makes life easier - given my age! Checking direction can be done without focusing on a dial 9" from my face now (which I had to with the left wrist mounted compass). On recent dives, I hate to admit, focusing up close on my wrist compass was getting near impossible.
Definitely worth the money.
