Seiko Cal. 6636 - 372

The Seiko 6636-372 represents an important milestone in Seiko's 1971 lineup. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-df48add4ba5e]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1971

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