Seiko Cal. 5688 - 441

This Spring Drive model from 1967 features a 35mm Hardlex-Coated Steel case. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-6dd3f878feb4]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1967

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