Seiko Cal. 5656 - 643

This Spring Drive model from 1967 features a 35mm Two-Tone case. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-6b5986df7302]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Cream

Jewels

22j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1967

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