Seiko Cal. 6641 - 963

This Hand-Winding model from 1979 features a 42mm Hardlex-Coated Steel case. With its 18mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-18d82736b2b8]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Green

Jewels

19j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1979

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