Seiko Cal. 3857 - 350

This Spring Drive model from 1968 features a 43mm Titanium case. With its 20mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-1f331e2e8707]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1968

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