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There exist numerous vintage Seiko divers popular with "Seikoholics" collectors, but few more so than the venerable 6306 series here - like this full serviced 1979 Seiko 6306-7001 automatic diver here.


Between 1965 and 1975, Seiko brilliantly conceived, designed, and produced three generations of classic ISO-certified 150 m divers’ watches, in chronological order - the 62MAS, 6105-8000/9, and the 6105-8010/9. 


Then 1976 arrived...


That year, Seiko debuted its replacement for its 6105, conceived in two different specifications - one for the domestic Japanese Domestic Market and the other for overseas. 


The latter international variant - the 6309 - featured a 17 jewel 6309A automatic movement, fitted with bilingual day wheels appropriate for the target geographic it would be sold in, while the former Japan domestic version - the 6306 - was to be fitted with a more advanced 21 jewel 6306A movement, with hacking and an English/Kanji Japanese day wheel.


The 6306 lived a rather short life in between the 6105 and 6309, and was produced from 1976 to 1981, when Seiko would favor the 6309 until it too was replaced with the 7002 diver in 1988.  The 6306 and 6309’s were a successful effort by Seiko to improve the 6105 movement, which allowed for greater lifespan, robustness, and ease of maintenance.


Both were 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.


In fact, the 6306 & 6309 divers gained - and still hold - respect worldwide, to include from individuals from literally all walks of life.  Military, police, firefighters, divers and regular people all over rave over the combination of ergonomics, aesthetics, reliability, legibility, affordability, durability and strength.  All of which have shown to form a legendary combination.


This Seiko 6306 JDM diver comes on a rubber Uncle Straps GL831 strap, and with nylon strap, rugged travel case, and springbar tool.

1979 Seiko 6306-7001 JDM Automatic Diver

Out of Stock
  • DIAL: Black Suwa-signed dial, with yellowish-red "water resist" lettering, no lume patina.  English/Kanji Japanese language variants on the day wheel.  Handset evinces ever so slight uniform patina; dial and handset lume shines following exposure to bright light.


    BEZEL: Bi-directional and ratchets with a click; bezel insert is in great condition (sans lume pip), impressive given the age of the watch - these inserts are normally first to be damaged when these diver's were used as designed, ie: hard.


    CASE: Stainless-steel cushion case measures in at a hefty 44mm (w/o crown, 44.5mm with) x 45mm, with brushed finish remaining on case top and sharp case lines.  Matching caseback, with its frosted Seiko "wave" emblem crisp and defined


    CRYSTAL: 6306-correct Hardlex crystal,  no scratches or cracks.


    BAND: This 6306 comes on a high quality Uncle Straps Seiko GL831 rubber strap; it also comes with a green and beige premium nylon strap. 


    MOVEMENT: Seiko 6300-series automatic movement, 21 jewels, manufactured in July 1979.  This 6306 diver has been fullly serviced.


    CROWN: Screw-down unsigned stainless-steel crown operates as designed.