Seiko Cal. 3866 - 365

The Seiko 3866-365 represents an important milestone in Seiko's 1968 lineup. It features a Black dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-0a4df6088302]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

34mm

Case Thickness

9.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

22j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1968

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