Seiko Cal. 4578 - 950

This Spring Drive model from 1970 features a 43mm Titanium case. Powered by the 4578 caliber with 33j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-2f76dd0b617a]

Also known as: Rally, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

43mm

Case Thickness

12.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1970

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