Seiko Cal. 3865 - 421

This Automatic model from 1970 features a 40mm Stainless Steel case. With its 21mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-04dcee6a6ec4]

Also known as: Sea Horse, Emperor

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

11.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1970

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