Seiko Cal. 6331 - 182

This Hand-Winding model from 1979 features a 37mm Hardlex-Coated Steel case. With its 21mm lug width and 13.8mm profile, it sits comfortably on most wrists. [seikata-wm-df871af05abe]

Also known as: Helmet, UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1979

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