Each runs Windows 7 and has up to 64GB of built-in flash storage as well as support for up to 64GB SD Cards. They're also outfitted with a 1.3-megapixel camera in the front and a 3.1-megapixel camera in the back, a mic for video calls, Wi-Fi and Bluetooth connectivity, as well as gaming buttons.
OCOSMOS is really stressing the gaming focus of both devices, as the 5-inch OCS1 appears to have two D-pad-like controls on either side of the display as well as two shoulder buttons on the top. Likewise, 9-inch OCS9 has a detachable controller with a virtual keyboard and similar gaming controls.
It's interesting that OCOSMOS is at least the second company at CES to unveil a mobile gaming device utilizing Intel's Oak Trail Atoms (see Razer's Switchblade). The company's press release quotes an Engadget editor saying the OCS1 can run StarCraft II, and that's impressive (albeit impractical) if true.