Seiko Cal. 4440 - 304

This Spring Drive model from 1975 features a 40mm PVD Black case. It features a Black dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-3ee052370a5f]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1975

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