Seiko Cal. 4540 - 566

The 4540-566 is a sought-after Solar piece from Seiko's golden era. Powered by the 4540 caliber with 29j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-ddab5e529387]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

34mm

Case Thickness

8.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1973

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