Seiko Cal. 0733 - 880

This Spring Drive model from 1983 features a 39mm Stainless Steel case. It features a Navy dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-e2d5c2efcd6b]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1983

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