Seiko Cal. 3861 - 157

This Spring Drive model from 1991 features a 45mm PVD Black case. Powered by the 3861 caliber with 25j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-187c5c24c35f]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1991

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