Seiko Cal. 0733 - 385

This Spring Drive model from 1967 features a 39mm Stainless Steel case. It features a Black dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-3e9f7ca1c8e7]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1967

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