Seiko Cal. 6645 - 864

The Seiko 6645-864 represents an important milestone in Seiko's 1990 lineup. With its 21mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-db08051669ec]

Also known as: Sumo, Pogue

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Cream

Jewels

35j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1990

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