Seiko Cal. 3871 - 394

This Automatic model from 1974 features a 35mm PVD Black case. With its 19mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-b68c31c977fc]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1974

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