Here's a tough nut of a tablet PC from MobileDemand, known as the xTablet T8700. You get the following features that will be able to last up to seven hours before the battery requires a trip to the nearest power outlet.

Intel Core Duo ULV U2500 1.2Hz processor

2GB of DDR2 RAM

8.4" daylight-readable touch screen display (800 x 600 resolution)

80GB 2.5" hard drive/Solid-state disks in 8GB/16GB/64GB capacities

Networking: LAN -- Gigabit Ethernet WLAN -- 802.11a/b/g PAN -- Bluetooth 2.0 (optional)

Integrated fax/modem with RJ11 connector

2 x USB 2.0 host

1 x serial port

Docking connector

Microphone in and speaker out

CompactFlash Type II slot

PC Card slot, CardBus 2.1 compatible

The xTablet T8700 retails for $3,800 and ships with an operating system of your choice - Windows XP Tablet PC Edition or Windows Vista Business Edition.

Full story: ubergizmo.com