Seiko Cal. 5644 - 564

The Seiko 5644-564 represents an important milestone in Seiko's 1990 lineup. With its 22mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-e816d1bf341d]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1990

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