Seiko Cal. 4445 - 691

This Hand-Winding model from 1971 features a 43mm Hardlex-Coated Steel case. With its 22mm lug width and 10.5mm profile, it sits comfortably on most wrists. [seikata-wm-7b1da6d4acc0]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1971

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