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Seiko Turtle 3rd Diver Ref.6306-7001





The Seiko "Turtle" third diver model holds a significant position in the realm of dive watches, being widely regarded as one of the most iconic and beloved designs. Its enduring popularity is evidenced by Seiko's continued production of diver watches inspired by its distinct features. The watch's undeniable presence on the wrist, coupled with its recognizable Turtle shell aesthetic, makes finding an immaculate specimen quite a challenging endeavor, especially when seeking the Japanese Domestic Market (JDM) version.


This particular model represents the third iteration in Seiko's 150m diver series. Powered by the Cal.6306 21J movement, it is a rare timepiece exclusively available in Japan during the period from 1976 to 1979. What sets it apart from the export version, the Cal.6309 17J, are the added functionalities of hacking (allowing precise time setting) and a bilingual calendar displaying both Japanese and English.


The example being offered is in pristine condition, a testament to its well-preserved state. It includes new compatible DAL1BP straps and it's original box.


Ships from Tokyo, Japan.

Seiko Turtle 3rd Diver Ref.6306-7001

  • The diver is in immaculate condition: The case is strong with just some light scratches. The dial is the main attraction here as it is very clean and the hands are still intact.  There are no scratches or peeling on the bezel and it rotates smoothly.

    The are no visible scratches on the glass.

    The watch is paired with a set of Seiko DAL1BP straps that are identical to the originals and come with its original box.

  • BRAND: Seiko
    MODEL: Turtle Diver 3rd model
    REFERENCE: 6306-7001
    DIAL: Original black dial
    CASE MATERIAL: Stainless Steel
    CASE DIMENSIONS: 44 mm Diameter, 12.0mm thickness, 22mm Lug Width
    CRYSTAL: Mineral Crystal
    CASE BACK: Screw-in Stainless Steel
    MOVEMENT: Seiko Automatic Cal. 6306A
    Manufacturing date: December 1978
    Service History: Serviced, ±10s/day
    Bracelet/Strap: New set of Seiko rubber straps DAL1BP.

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