Seiko Cal. 3816 - 812

This Spring Drive model from 1975 features a 37mm PVD Black case. It features a Black dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-76695ff07a60]

Also known as: UFO, Navigator

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1975

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