Omron

Omron 606

A very early four-banger with just 6 digits. In spite of it being chunky (nearly 1" thick) it has a simple design reminiscent of the Brauns.

This one is a bit beat up and is missing its wrist strap. But it was built to last.

BTW, these days Omron is better known for making blood pressure monitors and other medical equipment. Just look on the shelves of your local drugstore.

Omron 88

Nice "out of the box" design thinking results in a comfortable grip. This is a very nice device, though it evidently needs a little TLC because there's a good deal of bleed in the display.