Seiko Cal. 5681 - 551

This Spring Drive model from 1968 features a 42mm Gold-Plated case. It features a Navy dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-0563106cbc62]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1968

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