Questions about Mekede DUDU7

Hello,

I am looking to replace the head unit in my car and was looking at the DUDU7 but i have a few questions :

- Does buying the head unit from the MEKEDE mall make it come with a frame for the car or only the unit ?

- My car already has a reversing camera, is there a cable to buy extra to be able to use that camera in the aftermarket head unit ?

Thank you for your answers