Seiko Cal. 3871 - 644

This Automatic model from 1980 features a 36mm Two-Tone case. It features a Navy dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-bcacfa339452]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1980

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