Seiko Cal. 6387 - 642

This Spring Drive model from 1971 features a 35mm Hardlex-Coated Steel case. With its 18mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-4b6717da63e6]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1971

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