Seiko Cal. 4540 - 306

Seiko 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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