Seiko Cal. 3840 - 755

This Spring Drive model from 1967 features a 37mm Hardlex-Coated Steel case. It features a Black dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-e76d41759e56]

Also known as: World Timer, Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1967

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