JOYING Quad Core Android 4.4 Double DIN Car Stereo Radio Audio Head Unit Autoradio in Dash 7 Inch Capacitive Touch Screen 800480 GPS Navigation Support Steering wheel/ELM327 obd2/bluetooth OS: Android 4.4.4 kitkat; CPU: RK3188 1.6GHz Cortex A9 Quad Core 7 Inch Capacitive Resolution 800*480 Touch Screen, Android phone Easy Connect by USB and Airplay for iPhone Installation Size: 178*100mm; Comes with ISO harness (you can buy an ISO harness adapter or special harness). Steering Wheel Control Instruction: https://www.carjoying.com/Joying-blog/15.html Don't need to buy "2-Year Protection" from other Seller. We offer two years warranty of free replacing with defected parts. (not included shipping charges, and you need to return the damage parts)