From the site:
The OQO computer has all the functionality of an ultraportable notebook computer, with a 1GHz processor, a 20GB hard drive, 256MB of RAM, color transflective display (for easy indoor and outdoor viewing), 802.11b wireless, a removable lithium-polymer battery, and FireWire‚Ñ¢ and USB 1.1 ports. For input and navigation it includes thumb keyboard with TrackStik‚Ñ¢ and mouse buttons as well as digital pen and thumbwheel.