Seiko Cal. 5688 - 404

This Spring Drive model from 1967 features a 41mm PVD Black case. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-f5ebdb2c1e59]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1967

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