Seiko Cal. 6637 - 476

This Hand-Winding model from 1981 features a 34mm Gold-Plated case. With its 21mm lug width and 13.6mm profile, it sits comfortably on most wrists. [seikata-wm-beeb0a88df66]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Cream

Jewels

34j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1981

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