Seiko Cal. 6643 - 557

This Spring Drive model from 1988 features a 42mm Two-Tone case. With its 18mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-7120e248dc80]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

33j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1988

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