Manta 1970 – Swiss Quartz movement, Chronograph displaying 12-hour, 30-minute and 60-second subdials, Main dial polished silver-tone hour, minute and sweep seconds hands with luminous accents, Subdials displayed by polished silver-tone hands, Main dial polished silver-tone luminescent baton markers, Black Arabic numbers and indices mark subdials while black indices reveal quarter seconds and outer minute track, Analog date display at 4 under date magnifier, Notched unidirectional bezel with white enamel accents marked with grey numbers/indices for additional minutes recording, Brushed and polished silver-tone stainless steel round case, Polished custom ‘screw-in’ crown and polished selector buttons, Stainless steel caseback, Sapphire crystal, 100 meters/330 feet water resistant