Seiko Cal. 6643 - 267

The Seiko 6643-267 represents an important milestone in Seiko's 1977 lineup. With its 19mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-fb0a32fe739e]

Also known as: Bullhead, Arnie

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1977

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