Seiko Cal. 5680 - 740

This Quartz model from 1972 features a 38mm Hardlex-Coated Steel case. It features a Navy dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-932fa5fd6c38]

Also known as: Sportsmatic

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1972

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