Seiko Cal. 3866 - 375

The Seiko 3866-375 represents an important milestone in Seiko's 1983 lineup. It features a White dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-e225a1af2e3e]

Also known as: Sumo, Bullhead

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1983

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