Seiko Cal. 5657 - 918

This Quartz model from 1971 features a 40mm Gold-Plated case. It features a Navy dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-e60217d3c10f]

Also known as: Monster, Emperor

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1971

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