Seiko Cal. 4524 - 640

This Automatic model from 1972 features a 46mm PVD Black case. Powered by the 4524 caliber with 29j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-15258e68af26]

Also known as: Bullhead, Emperor

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Cream

Jewels

29j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1972

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