I found one old Casio G-shock watch that could work very good as device for storing seed words, but this should not be used for storing large amount of coins.
Exact model of watch is G-Shock G-2900, it was released back in year 2002 and it not manufactured anymore, but it can be purchased as used device.
G-2900 have one of the largest data memory from dumb casio watches, and this can be used as offline storage for keys and any other text, with additional password protection.

There was also one hardware wallet BITHD Watch 2 that looked more like modern smart watches, but it is not produced anymore and Bithd website is down.