Seiko Cal. 4440 - 568

This Spring Drive model from 1981 features a 45mm Titanium case. It features a Green dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-890242a487cd]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

8.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

34j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1981

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