Seiko Cal. 5658 - 678

This Spring Drive model from 1992 features a 37mm Hardlex-Coated Steel case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-f8fcb98cee52]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1992

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