Seiko Cal. 4430 - 440

The Seiko 4430-440 represents an important milestone in Seiko's 1988 lineup. The Inner Rotating bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-f41f951c369c]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

12.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1988

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