Seiko Cal. 3859 - 850

This Spring Drive model from 1965 features a 40mm Titanium case. With its 22mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-104e334322f9]

Also known as: Bellmatic, World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1965

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