Seiko Cal. 4433 - 255

This Spring Drive model from 1979 features a 37mm Titanium case. It features a Silver dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-2edbe01b65a2]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

26j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1979

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