Seiko Cal. 4428 - 139

The Seiko 4428-139 represents an important milestone in Seiko's 1992 lineup. It features a Silver dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-6f105e2ca086]

Also known as: Sumo, Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

26j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1992

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