Seiko Cal. 6691 - 588

This Quartz model from 1973 features a 44mm Hardlex-Coated Steel case. It features a Green dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-d73a221ea102]

Also known as: Silverwave, Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1973

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