Seiko Cal. 3860 - 663

The Seiko 3860-663 represents an important milestone in Seiko's 1970 lineup. The Fixed bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-7e13a43b9f24]

Also known as: Bellmatic, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1970

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