Seiko Cal. 3871 - 317

The Seiko 3871-317 represents an important milestone in Seiko's 1987 lineup. It features a Black dial protected by a Hardlex crystal and offers 130m of water resistance. [seikata-wm-93345ab4dc5c]

Also known as: Monster, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1987

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