Seiko Cal. 3891 - 508

This Spring Drive model from 1972 features a 34mm Stainless Steel case. With its 21mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-390a4a0c7ca1]

Also known as: Monster, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1972

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