Seiko Cal. 4443 - 523

Released in 1976, the Cal. 4443 with design code 523 was part of Seiko's domestic market collection. Powered by the 4443 caliber with 28j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-b365190114cb]

Also known as: UFO, Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1976

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