Seiko Cal. 5678 - 743

This Quartz model from 1972 features a 35mm Stainless Steel case. It features a Navy dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-f4041b16e330]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1972

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