Seiko Cal. 3871 - 642

The Seiko 3871-642 represents an important milestone in Seiko's 1983 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-ae1b1ae8b3b7]

Also known as: Rally, Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

38mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1983

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