Seiko Cal. 6642 - 731

This Automatic model from 1980 features a 40mm PVD Black case. Powered by the 6642 caliber with 30j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-4b65e246877d]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Burgundy

Jewels

30j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1980

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