Seiko Cal. 6634 - 321

The Seiko 6634-321 represents an important milestone in Seiko's 1971 lineup. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-ce4fc641557d]

Also known as: Shogun, Sportsmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

15.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

White

Jewels

33j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1971

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