Seiko Cal. 5644 - 816

The Seiko 5644-816 represents an important milestone in Seiko's 1981 lineup. With its 20mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-0e14448d1d04]

Also known as: Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1981

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