Seiko Cal. 3851 - 166

This Quartz model from 1970 features a 40mm Hardlex-Coated Steel case. It features a Cream dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-719bc1c4ea6f]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Cream

Jewels

31j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1970

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