Seiko Cal. 4422 - 971

This Spring Drive model from 1997 features a 37mm Hardlex-Coated Steel case. With its 20mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-a14b1dec0bda]

Also known as: Tuna, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1997

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