Seiko Cal. 6637 - 810

This Hand-Winding model from 1970 features a 43mm Stainless Steel case. Powered by the 6637 caliber with 34j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-6d745410f8bf]

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

14.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

34j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1970

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