Seiko Cal. 6231 - 612

This Spring Drive model from 1989 features a 39mm PVD Black case. It features a Silver dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-43abcb15a6af]

Also known as: Turtle, Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1989

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