Seiko Cal. 6642 - 652

This Spring Drive model from 1973 features a 44mm PVD Black case. Powered by the 6642 caliber with 17j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-1917e33a51f0]

Also known as: Goldfeather, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1973

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