Seiko Cal. 5687 - 569

This Spring Drive model from 1991 features a 42mm Hardlex-Coated Steel case. It features a Navy dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-8ec98a8f9e43]

Also known as: Helmet, Arnie

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1991

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