Seiko Cal. 6643 - 936

This Kinetic model from 1968 features a 45mm Stainless Steel case. With its 22mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-15ec98739b78]

Also known as: UFO, World Timer

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

19j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1968

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