Seiko Cal. 3815 - 644

This Hand-Winding model from 1987 features a 36mm Stainless Steel case. Powered by the 3815 caliber with 31j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-d7f90486a4ec]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1987

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