As of now there is no details of the model number just we know it will be called Galaxy C. Even we have no idea of the display size too. There is no details about the dual camera having an Wide angle or zoom or monochrome sensor.
As per rumor Galaxy C will be powered by SD 660. It will be built completely out of metal with antenna bands on top of the dual camera as per the images leaked.
We have to wait for some more days to get more details leaked for the Galaxy C.