Seiko Cal. 4443 - 722

This Spring Drive model from 1973 features a 40mm Stainless Steel case. With its 21mm lug width and 10.1mm profile, it sits comfortably on most wrists. [seikata-wm-25f57de021c5]

Also known as: Turtle, Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1973

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