Sharp
Expertpad
(1993)

Model: PI-7100
CPU: ARM 610
Speed: 20 Mhz
Display: 336x240
BACKLIGHT: no
ROM: 4 MB
RAM: 640 kb
BATTERY: 4 AAA NiCd battery
PCMCIA: 1 PC Card Type II
HEIGHT: 182 mm
WIDTH: 112 mm
DEPTH: 28 mm
Newton OS: 1.00

The Sharp Expertpad is basically an OMP in a different housing. Otherwise, the devices seem to be very similar from a hardware point of view.

Personally I don't like the case. It looks cheap, but I know people who like it.