Seiko Cal. 5664 - 626

The Seiko 5664-626 represents an important milestone in Seiko's 1981 lineup. With its 21mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-ffeb8de43ee2]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1981

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