Via Gadget Lab:

Martin Magnusson of Linköping, Sweden, created this excellent wearable computer. It consists of the foliowing components:

a pair of Myvu Crystal video glasses hacked into a monocular head-mounted display,
the Beagleboard single-board computer running Angstrom Linux,
a Plexgear mini USB hub driving a bluetooth adapter and powering the Beagleboard and the display,
four 2700 mAh AA batteries powering the USB hub,
a foldable Nokia SU-8W bluetooth keyboard for input,
and Internet connectivity through bluetooth tethering to an iPhone in my pocket.

Martin’s blog Becoming Cyborg describes every step of creating the glasses, check it out!