Seiko Cal. 6317 - 311

This Spring Drive model from 1992 features a 37mm Two-Tone case. With its 18mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-9e26b74f927f]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1992

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