Seiko Cal. 5642 - 491

This Spring Drive model from 1996 features a 37mm Hardlex-Coated Steel case. It features a Silver dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-4113a79c7dbb]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

22j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1996

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