Seiko Cal. 6331 - 428

This Spring Drive model from 1994 features a 34mm Two-Tone case. With its 18mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-b44dc5d81710]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

180m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1994

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