Seiko Cal. 6642 - 331

This Spring Drive model from 1974 features a 41mm PVD Black case. Powered by the 6642 caliber with 30j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-e8906afb212e]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

30j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1974

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