OPEL ASTRA K • OS : Android 5.1.1 system • CPU : Rockchip Quad-core • RAM : DDR3 , 1GB • Flash : 16GB • Built in WIFIBuilt in DVR function (directly connect USB camera) • Built in dual way mirror link function • Connect external OBD (optional ) • Connect external 3G modem (optional ) • Capacitive multi-touch screen • Screen resolution : 800x480 • Built-in Bluetooth for mobile hands-free. • Built in GPS function • Steering wheel control function • Subwoofer output 4*50W • Radio receiving: FM/AM can be stored 30 stations. RDS is available . • Video: MP4,H.264,WMV,AVI,RM/RMVB,VOB and more • Audio: MP3,WMA,WAV and more • USB/SD card port: support MP4,DIVX,JPEG,MP3 and WMA playback • Car backing display: Car reverse camera input (switch automatically) • AV output/input : 2 video out, 4audio output, 2video input ,2 audio input • Compatible with DVD,DVD-R,DVD-RW,HDVD,DVCD,MP3,MP4,CD-R,CD-RW,VCD,DIVX,WMA etc. • External microphone