Seiko Cal. 5641 - 973

The 5641-973 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-950c4c16a261]

Also known as: UFO, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1979

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