Rare original Seiko "Tuna Can" style, from around 1978, 300m divers quartz model with steel case and aluminum protective shroud held by 3 screws. Powered by high torque 5 jewel Seiko quartz 7549 made in Japan module.
Functions:
Day/Date calendar, window display.
Solid AISI 316L Stainless steel. Sandblasted finish aluminum protective shroud.
Duo-Directional rotating, ratcheted, 0-60 countdown.
Sport style, screw-down (threaded).
Mineral glass. Very slight dome profile.
Black color. Luminous hour markers/dots.
Hands:
Steel color. Luminous filled.
Black color. Factory Logo embossed. Genuine rubber. Brand new.