Seiko Cal. 4517 - 431

The Seiko 4517-431 represents an important milestone in Seiko's 1975 lineup. With its 21mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-c00fe3f57da4]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

15.0mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1975

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