Seiko Cal. 4578 - 974

This Hand-Winding model from 1984 features a 38mm PVD Black case. Powered by the 4578 caliber with 17j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-6960e00490b0]

Also known as: Sumo, Silverwave

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1984

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