Seiko Cal. 3891 - 156

This Spring Drive model from 1982 features a 36mm Stainless Steel case. Powered by the 3891 caliber with 28j jewels beating at 36,000 bph, it delivers a 60 hours power reserve. [seikata-wm-ac7d8869ca9b]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1982

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