Seiko Cal. 4443 - 306

The Seiko 4443-306 represents an important milestone in Seiko's 1980 lineup. The Inner Rotating bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-b894e53a72c4]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1980

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