Seiko Cal. 4443 - 721

Released in 1977, the Cal. 4443 with design code 721 was part of Seiko's domestic market collection. The Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-320cc2eca83b]

Also known as: UFO, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1977

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