Seiko Cal. 3871 - 640

This Quartz model from 1970 features a 34mm PVD Black case. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-7c8e7ad6a444]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

34mm

Case Thickness

11.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1970

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