Seiko Cal. 4540 - 306

The 4540-306 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4540 caliber with 22j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-50f8cfdfa034]

Also known as: Monster

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Champagne

Jewels

22j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1965

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