Seiko Cal. 6663 - 678

This Automatic model from 1970 features a 34mm Stainless Steel case. It features a Navy dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-f5129b7bf1c8]

Also known as: Shogun, Sea Horse

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1970

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