I used to own an amfibia. My thoughts are inline with most reviewers:

• Bang for buck
• piece of history
• acrylic dome scratches as well as it polishes
• finitions are meh, but you know that before buying
• best week end driver / beatwatch I had

Water and toothbrush. Never ever use soap, which just gets in the seals.

First I wouldn’t. Watches might not be fashionable in 20-30 years.

Second: Something truly timeless. Not any of the current trends, something neutral in size and design.

Also something not too sporty or dressy.

Personnal choice : I’d stay away from “Swiss” swatch group which are really overpriced.

Top choices:

• Junghans Max Bill series.
• Seiko prospex (at least you are sure the watch will run for a long tome)

Other

• Damasko DC70
• Muhle teutonia or panova

Maybe a high end Chinese watch as the period of their birth is China’s time.

Bought a frankenwatch advertised as original. Seller refused to pay back, c24 refused to get involved.

Had to raise some shit which got me most of my money back and the authorized dealer banned.

I wouldn’t dig too much into the ban.

Just saw one in a shop.

https://festina.com/en-GB/collection/pocket

Seiko prospex have decent bracelets and can be found under 500€

Some sponsors are watch markers

It is intended to be used as a wristwatch and a hand held Chrono.

It’s weird on a watch made to be held in the hand to time things as well as worn on the wrist. The strap prevents it intended use.