Seiko Cal. 5641 - 320

This Automatic model from 1969 features a 36mm PVD Black case. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-cf35feb808ba]

Also known as: UFO, Navigator

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

21j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1969

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