When we were starting basic training with the RAF we were instructed to buy the F-91W specifically and to leave fancy watches at home. It made exercises easier

When we were starting basic training with the RAF we were instructed to buy the F-91W specifically and to leave fancy watches at home. It made exercises easier to instruct when everyone's watch worked the same way, plus I suppose it reduced one of the temptations of pilfering in the barracks. Of course there was always one joker who bought the bright-pink edition ;)