Seiko Cal. 6634 - 438

The Seiko 6634-438 represents an important milestone in Seiko's 1965 lineup. With its 21mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-20012f199821]

Also known as: Tuna, Goldfeather

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

19j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1965

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