Seiko Cal. 6644 - 185

The Seiko 6644-185 represents an important milestone in Seiko's 1981 lineup. With its 18mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-87d93c3a3031]

Also known as: Sumo, Silverwave

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

41mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1981

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