Seiko Cal. 6640 - 891

This Hand-Winding model from 1987 features a 43mm Stainless Steel case. With its 21mm lug width and 14.1mm profile, it sits comfortably on most wrists. [seikata-wm-566bcd53b81e]

Also known as: Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

14.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1987

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