Seiko Cal. 4530 - 231

This Hand-Winding model from 1978 features a 45mm PVD Black case. Powered by the 4530 caliber with 34j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-b9cfda104f7e]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1978

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