JOYING 7" Android 5.1 Lollipop Quad Core 1024600 Capacitive Touch Screen Double 2 Din Car Radio Bluetooth WiFi 1080P Aftermarket Auto GPS Navigation Head Unit Car Stereo Android 5.1.1 Lollipop Latest Fast and Responsive Operation System; CPU: RK3188 Cortex A9 Quad Core 1.6GHz. Panel Size: 178*100mm, comes with ISO harness, please check the Ads image to confirm the dimension and harness, you may need dash kit and ISO harness adapter for installation Support Google play store; Google voice search; Support many kinds of GPS applications, online/offline map; Easy to connect WiFi and hotspot for internet; Bluetooth hands-free calling and A2DP; Easy Connect Airplay; RDS radio; USB/SD port; Support 3G/4G dongle/OBD2/Backup Camera/DVR functions. Friendly Button design: SRC Buttons--Switch Function for Radio, Music, Video, AVIN Installation Video: https://youtu.be/8N9G7d6hg6s  Demo Video: https://youtu.be/dqqjKUphsOo Steering Wheel Control Instruction: https://www.carjoying.com/Joying-blog/15.html  Allow to apply to many vehicles except to VW/BMW/Audi. We provide 24-month warranty of free replacing with defected parts. (Not included shipping charges)