Seiko Cal. 6131 - 643

This Hand-Winding model from 1978 features a 45mm Hardlex-Coated Steel case. It features a Cream dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-6fce0285acb3]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Cream

Jewels

20j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1978

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