There are many vintage Seiko divers popular with collectors, but none more so than the venerable 6309 here - an all-original early 1982 Seiko 6309-7049 automatic diver.

The 6309 series of diving watches was the third generation of Seiko’s recreational/professional divers.  The 6309 line replaced the 6105 in 1976 and was produced until 1988, when Seiko replaced it with the 7002 diver.  6309’s were a successful effort by Seiko to improve the 6105 movement, which allowed for greater lifespan, robustness, and ease of maintenance – not to mention they look great on the wrist.

The 6309 line was produced in two separate case variations: an earlier cushion case, popularly known as the “turtle” for the appearance of its cushion case, which was produced between 1976-88 (offered for sale here), and a slimmer case version from 1982-88.  The 6309 was popular with the U.S. military akin to the Seiko model it replaced, the 6105, its (much more expensive) forefather, and quickly became the staple of the working diver.  The 7049 was designated for the North American market, and the 7040 was for the Japanese Domestic market and the rest of the world.


This vintage Seiko diver comes with a velcro "NASA" one piece strap (akin to those used by NASA astronauts, only shorter), nylon NATO strap, Pelican travel case, and springbar tool.

1982 Seiko 6309-7049 Automatic Diver

  • DIAL: The highlight of this 6309 is it's original Seiko-signed black dial, with no imperfections or blemishes.  Date window has a  bevel around it (unlike cheap 6309 aftermarket dials), and original hands; dial and hands evince a uniform subtle hint of patina throughout the lume.  Spanish/English day variants and date at the chamfered 3 o'clock position work correctly as designed.  Lume shines brightly.


    BEZEL: Origianl bi-directional bezel firmly ratchets with a satisfying click; original bezel insert in shows slight wear, but not overly so.  Seiko font and intact and clean lume pip at 12 o’clock position.


    CASE: Original hefty 44mm (w/o crown, 44.5mm with) x 45mm stainless steel cushion case.  Matching original caseback.


    CRYSTAL: Seiko 6309-correct Hardlex crystal, scratch-free.


    BAND: This 6309 comes with a one-piece velcro and leather strap, with stainless-steel buckle - a quite comfortable strap for this vintage Seiko 6309 due to its minute sizing ability.  This 6309 also comes with a premium dark blue and cream "seatbelt" NATO strap.


    MOVEMENT: Original 6300-series Seiko automatic movement, 17 jewels, manufactured in March 1982, which beats at 21,600 beats per hour.


    CROWN: Original screw-down unsigned stainless steel crown.