Seiko Cal. 5643 - 496

The Seiko 5643-496 represents an important milestone in Seiko's 1971 lineup. With its 20mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-f6bf625b8e37]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1971

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