Seiko Cal. 6643 - 127

This Spring Drive model from 1966 features a 45mm Two-Tone case. With its 18mm lug width and 11.1mm profile, it sits comfortably on most wrists. [seikata-wm-e6b8e301ceed]

Also known as: Monster, Shogun

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1966

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