Seiko 5 6309-8980

Blue 24-hour numerals and red minute accents animate the matte black dial of this Seiko 5 watch from 1981, reference 6309-8980. The 38 mm steel case retains its original Z1627-E bracelet, with a recorded wrist size of 21.5 cm. Automatic caliber 6309 supplies central seconds and a bilingual day-date.

Black dial with blue and red scales

Applied rectangular markers and discreet luminous plots stand against the matte surface. The inner blue 13–24 scale provides a second way to read the displayed hour. Red hashes punctuate the outer minute track.

An applied SEIKO wordmark and 5 shield sit below 12. The framed day-date occupies 3 o’clock, while slim baton hands have luminous centers. A vivid red central seconds hand repeats the minute track’s color. Dial printing, hands and markers are clean and well preserved.

Original Z1627-E bracelet and case proportions

The stainless steel case combines brushed upper planes with a polished round bezel and softly cushioned shoulders. It measures 38 mm across and 44 mm from lug to lug, with an 18 mm fitting. A slightly raised flat crystal preserves the low profile.

The crown sits close to the case around 4, keeping it away from the wrist. The original Seiko Z1627-E steel bracelet has a three-link layout, smooth articulation and a secure folding clasp. The recorded 21.5 cm wrist size is relevant when assessing its fitted length.

Automatic caliber 6309 and working calendar

Caliber 6309 powers this automatic watch’s central seconds and bilingual day-date. The calendar advances correctly, and setting and winding operate as intended following service.

The technical dial and recessed crown show the practical direction of the Seiko 5 in the early 1980s. Color is used for reading scales, while the bracelet and contrast case finishing maintain a cohesive daily-wear design.

Original watch components, including the identified bracelet, are retained in this used example. The case finishing remains attractive. The watch is fully serviced and fully operational, with a 12-month warranty. Insured worldwide shipping and professional packing are available.