Seiko Cal. 6317 - 442

This Spring Drive model from 1983 features a 44mm Two-Tone case. With its 21mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-e03b1d9f4d6e]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1983

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