Seiko Cal. 6643 - 513

This Quartz model from 1985 features a 39mm PVD Black case. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-fb2f47a46cba]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1985

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