you just want a CD player without other functions ?

how do you think the overhead DVD ? New Auto Overhead DVD Player with DVB-T ... p-121.html

I Just want to buy one for my child, when i am driving , he can spend his time in the back.

do you have any other advice ?

It seems that now a aftermarket radio comes with seering wheel controls . i had seem it on happyshoppinglife, maybe you can check it

you can consult a dealer or a manufacturer, tell them the size of your radio and the year of the car . they will help you find a radio fitting your car .and the installation guide is ready from them