Seiko Cal. 5640 - 989

This Automatic model from 1980 features a 34mm PVD Black case. Powered by the 5640 caliber with 22j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-0c30a5e13330]

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1980

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