Seiko Cal. 4578 - 741

The Seiko 4578-741 represents an important milestone in Seiko's 1978 lineup. Powered by the 4578 caliber with 18j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-3f73b810b24a]

Also known as: Sea Horse

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1978

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