Seiko Cal. 4448 - 722

This Hand-Winding model from 1976 features a 42mm Stainless Steel case. The Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-16559a893108]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Green

Jewels

22j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1976

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