Seiko Cal. 6387 - 431

This Quartz model from 1966 features a 43mm Gold-Plated case. Powered by the 6387 caliber with 27j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-d6f1ac6b1ec5]

Also known as: Bullhead, Arnie

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1966

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