Seiko Cal. 6644 - 616

This Spring Drive model from 1967 features a 38mm Gold-Plated case. It features a Cream dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-9515711c5e77]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

14.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

22j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1967

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