Seiko Cal. 4537 - 650

Seiko 4537-650

The 4537-650 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4537 caliber with 20j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-1c36d5013aa9]

Also known as: Bullhead

Specifications

Movement
Kinetic
Case Material
Gold-Plated
Case Width
44mm
Case Thickness
11.8mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
180m
Dial Color
Navy
Jewels
20j
Frequency
28,800 bph
Power Reserve
52 hours
Year
1974

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