Seiko Cal. 4578 - 820

This Quartz model from 1969 features a 41mm Hardlex-Coated Steel case. Powered by the 4578 caliber with 25j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-d2bdaee9e8e4]

Also known as: Monster, Rally

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1969

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