Seiko Cal. 4436 - 640

The 4436-640 is a sought-after Kinetic piece from Seiko's golden era. With its 20mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-21985db6ddfc]

Also known as: Bullhead, Navigator

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

19j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1990

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