Seiko Cal. 3812 - 236

This Hand-Winding model from 1981 features a 37mm PVD Black case. Powered by the 3812 caliber with 18j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-2be580dd372e]

Also known as: Crown, Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

White

Jewels

18j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1981

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