Those of you that have played Fallout 3 will certainly recognize the resemblence between General Dynamics' GD300 and the PipBoy. The General Dynamics GD300 is an Android-based GPS-unit designed for soldiers on the battlefield that can access real-time GPS and communicate with tactical radios.
The PDF file for the GD300 mentions that the device has a "fully rugged design", is glove-friendly, has a high-gain antenna design, and comes in at 8oz. It does all that while managing to pack in a 3.5" 800 x 480 display, 256MB RAM, 8GB on-board memory, and a 600MHz ARM Cortex A8 processor.
While the source states that the device gets more than 8 hours of battery run time, I am slightly concerned that the 1550mAh battery will not be able to run the device as advertised in heavy use.
TalkAndroid adds that the GD300 "uses an unspecified version of Android and will be used in an arm or chest mounted design. The unit uses the SiRFstarIII chip and stubby quad-helix antenna and is MIL-STD 810G tested for durability."
Phandroid notes that "there are cell phones packing more of a punch than this, but what more do you need to call in a blanket of missiles on a particular location from the comfort of your wrist?"
Image from Engadget