Built-in CarPlay & Android Auto system: Connect with mobile phone to access mobile phone contacts, email, notification, map navigation, music, video and other information. Built-in Bluetooth function, can connect to phone, and handsfree calling, more when driving car,bluetooth music play Support reverse rear view system: If connect to a car backup camera, the car stereo monitor will turn to rear view reversing details automatically and help driver a safe parking AUX audio input interface supports external MP3, mobile phones, music players, etc. System:Allwinner system Frequency:Default transmit frequency 88.60/89.50/91.50/93.00/93.90/95.10 MHz(optionalfrequency range 87.50-108.00MHz) Power:Built-in 1W speaker Voltage:12~30V Temperature:-10~60C BT version:Version 5.0(default name: -BT) Resolution:1280x720 Screen size:4.7 inches(IPS display) Installation size:120x68MM Shell size:126x83MM Host depth:25mm Mobile Internet: Mirrorlink, CarPlay (wired + wireless), USB interface:USB1+USB2 Audio output:Support (left channel + right channel) Audio format:MP3/AAC/APEOGG/M4A/RA/WAV Video format:H263/H264/H265/ HD///MKV/MPEG/MP4/WMV9////OT Image Format:JPEG/PNG/BMP/GIF/ Factory set password:113266 Color: Black Material: plastic + metal Package Contents: 1 x host 1 x English Manual 1 cable 1 x Remote control(2X AAA Not included) 1 x bracket Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.