Seiko Cal. 5640 - 966

This Solar model from 1980 features a 43mm Hardlex-Coated Steel case. With its 22mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-36a2b15106a7]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1980

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