Seiko Cal. 4530 - 204

This Solar model from 1973 features a 42mm PVD Black case. Powered by the 4530 caliber with 29j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-96762447ed7d]

Also known as: Sumo, Helmet

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

29j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1973

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