Seiko Cal. 6663 - 170

This Spring Drive model from 1981 features a 35mm Hardlex-Coated Steel case. With its 21mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-98b226ec7a3c]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1981

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