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Professional Authentication Platform

Some specifications for this reference are on file; the record is incomplete.

Seiko · Prospex

Turtle

Ref. 6309-7040

discontinuedExport cushion diverPartially documentedEvidenceProbableLast reviewed Not yet reviewed

Overview

Production
1976–1988
Era
Export cushion diver
Status
discontinued

Case

Case diameter
44mm
Lug width
22mm
Case material
Stainless steel
Construction
Cushion case, crown at 4
Bezel
Unidirectional 60-minute
Crystal
Hardlex
Crown
Screw-down crown at 4
Caseback
Screw-down with a tsunami (wave) medallion
Water resistance
150m

Dial & Hands

Dial
Black
Hands
Baton hour and minute, lollipop seconds
Lume
Tritium, then LumiBrite on late examples

Movement

Movement
Automatic
Caliber
6309A
Manufacturer
Seiko
Winding
automatic
Frequency
21,600 vph
Jewels
17
Complications
Day-date; non-hacking, non-hand-winding