Seiko Cal. 5222 - 637

The Seiko 5222-637 represents an important milestone in Seiko's 1977 lineup. With its 22mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-7f11ec398e53]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1977

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