I carry a Ruhla Regular pocket watch. It is build in a simple way and can be easily maintained.
My wristwatch is build in WW II aviator style. It has a clone of a Unitas pocket watch movement in it. The face is easy to read in the dark and the maintenance of the movement can be done DIY. I build this watch from parts I found in the internet. As a mechanical watch it doesnīt need a battery or capacitor.
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If it isnīt broken, it doesnīt have enough features yet.