Seiko Cal. 3831 - 197

This Spring Drive model from 1977 features a 34mm Stainless Steel case. With its 21mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-08f7cb483e3c]

Also known as: Samurai, Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

12.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1977

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