Seiko Cal. 4438 - 594

This Spring Drive model from 1966 features a 40mm PVD Black case. Powered by the 4438 caliber with 32j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-7cbaaf6a7a14]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

12.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

32j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1966

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