Inspecting the Rolex logo, serial numbers, rehaut engraving, weight, and finish of the watch can help spot a fake. Also, Rolex watches use automatic movements, so if the second hand is ticking instead of sweeping, it might be a fake.
No, the Rolex Oyster Perpetual does not have a battery. It is powered by an automatic, self-winding movement.
It is not recommended to open a Rolex watch yourself as it requires special tools and can easily damage the watch. It should be done by a professional.
To wind an Oyster Perpetual, unscrew the crown to the winding position and then turn it clockwise about 30 to 40 times.
The Rolex Oyster Perpetual consists of several hundred parts, exact number varies based on the model and its features.