Seiko Cal. 5642 - 247

This Spring Drive model from 1972 features a 43mm Two-Tone case. The Fixed bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-8bbcff6ba5b7]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1972

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