Seiko Cal. 5637 - 722

The Seiko 5637-722 represents an important milestone in Seiko's 1976 lineup. With its 22mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-0bb0ccb594f0]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

20j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1976

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