ibm palm top pc 110, measuring only 158 by 133 by 33 mm (6.2 by 5.2 by 1.3 in) and weighting about 630 g (1.39 lb) with the battery inserted
I love these fuckers. I’ve got one with a bad screen, but that’s super common with them.
Here’s a picture from the ads that really shows how tiny it is:
