Seiko Cal. 6331 - 156

This Quartz model from 1991 features a 39mm PVD Black case. With its 19mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-f7774a7917b5]

Also known as: Helmet, Flighty

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1991

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