Original Mazda stereo, like new. It has the button that raises and lowers the volume only. You can raise it using the steering wheel or the control behind the gear. The price for the stereo is 200, non-negotiable. Also available is the cover behind the gear. The screen is clean and working. Sometimes half of it glitches and then returns to normal. It fits most cars. The price for the screen is 350, non-negotiable. Open to offers.