Seiko Cal. 5641 - 926

The Seiko 5641-926 represents an important milestone in Seiko's 1978 lineup. With its 20mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-4602de0c86bc]

Also known as: Helmet, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1978

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