Seiko Cal. 6643 - 572

This Quartz model from 1989 features a 38mm PVD Black case. With its 22mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-43a009c4e32f]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1989

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