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For a US-based T-Mobile MDA that was put into action just last week, here are the specs (this is the one pictured in all of the screenshots):

VERSION:
ROM version: 1.8.0.2 WWE
ROM date: 12/10/05
Radio version: 01.09.10
Protocol version: 4.0.13.20
ExtROM version: 1.8.10.104

HARDWARE:
CPU: OMAP850
Speed: 195 MHz
RAM size: 64 MB
Flash size: 128 MB
Flash chip type: M-Systems G3
Data bus: 16 bits
Storage size: 47.46 MB
LCD: 240x320
Colors: 65536

IDENTITY:
Model No. WIZA200
Plaform: PocketPC
IMEI: yeah, right! :)

This may or may not apply to the following models and platforms:
HTC Wizard / T-Mobile MDA / i-mate K-JAM / Cingular 8125 / 8100