Seiko Cal. 4439 - 561

The Seiko 4439-561 represents an important milestone in Seiko's 1988 lineup. It features a Black dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-61c0455374fc]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1988

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