Seiko Cal. 4593 - 487

This Hand-Winding model from 1965 features a 38mm Hardlex-Coated Steel case. Powered by the 4593 caliber with 18j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-a6fe5aab6771]

Also known as: Tuna, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1965

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