Seiko Cal. 6663 - 820

This Hand-Winding model from 1979 features a 39mm Hardlex-Coated Steel case. With its 20mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-a7e83578c8a7]

Also known as: Samurai, Navigator

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1979

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