Q: How big is a 100/200LX?
A: Approx 16cm x  8.5cm x 2.5cm (6.25" x 3.3" x 1") closed, or about
the size of a checkbook, only thicker.  It has a clamshell-style case.

Q: So tiny!  Can I touch-type on it?  Is the screen too small to read?
A: Touch typing is quite a trick.  The keys are much closer together
than normal adult human fingers.  But the keys have a positive click
feel.  Some people adapt quite well to them, others despise the 
100/200LX keyboard.

The screen is very sharp and contrasty, but your eyes might not be.
Try before you buy, especially if you have trouble reading fine print
in dim light.  The print is quite small in 25x80 mode, but you can
use special key combinations to zoom and pan around, displaying only
a portion of the screen, magnified, on the 100/200LX physical screen.
The screen is not backlighted, and is easiest to read in bright light.

Q: Where can I get a carrying case for a 100/200LX?
A: For a cheap padded case, look for one designed for a pocket 35mm
camera, game machine, personal stereo, or calculator.  For a fancy
executive-style leather case, see ads in the Palmtop Paper, Edu-Calc,
etc.