Seiko Cal. 5688 - 551

This Spring Drive model from 1982 features a 46mm Hardlex-Coated Steel case. It features a White dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-4f078d59dcd1]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1982

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