Seiko Cal. 5644 - 935

This Quartz model from 1985 features a 41mm Hardlex-Coated Steel case. It features a Burgundy dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-619dccb7b4ad]

Also known as: Sumo, Silverwave

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1985

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