Seiko Cal. 6637 - 179

This Quartz model from 1978 features a 35mm Hardlex-Coated Steel case. Powered by the 6637 caliber with 20j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-088a1c0ef9b8]

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1978

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