Seiko Cal. 6637 - 896

This Spring Drive model from 1991 features a 34mm PVD Black case. Powered by the 6637 caliber with 29j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-00c6df370132]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

34mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1991

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