Seiko Cal. 3870 - 412

The Seiko 3870-412 represents an important milestone in Seiko's 1978 lineup. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-1853e1a90845]

Also known as: Arnie

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1978

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