Mint condition GMT (it has a 24 hour hand in addition to the 3 time-only hands on standard watches) with internally rotateable bezel, 70m “Waterproof”, 41,5mm diameter stainsless steel case, plexiglass crystal (“hesalite”) – in other words an unusual automatic Seiko from 1970. Stamped 0 8 (August 1970) and 6210. Ref 6117-6410. Original bracelet with manufacturer’s logo. Notice the special 24 hour indicator hand! This is a vintage toolwatch in very good condition, maybe one that was used by aircraft crew crossing timezones.