If a tool watch 'has features that accomplish specific tasks beyond simply keeping accurate time' then shirley the moonwatch, which has a hesalite crystal for a very specific reason, is a tool watch?
Do you do much diving? If you're buying a mechanical watch you're already conceding things like accuracy to any quartz watch so you've got to buy into the historical side.
If a tool watch 'has features that accomplish specific tasks beyond simply keeping accurate time' then shirley the moonwatch, which has a hesalite crystal for a very specific reason, is a tool watch?