Seiko Cal. 3857 - 826

This Spring Drive model from 1966 features a 40mm Stainless Steel case. With its 21mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-77dddde44d4f]

Also known as: Monster, UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1966

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