Seiko Cal. 6631 - 548

This Quartz model from 1974 features a 39mm Stainless Steel case. It features a Black dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-d30310101f06]

Also known as: Turtle, Sea Horse

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

Black

Jewels

19j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1974

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