Voice control and built-in speaker How to Get the Sound from Car Stereo: This unit has built-in speaker, but if you want louder sound, you can transfer it to your car's speakers: By FM radio transmitter, you can set the same FM radio channel on the unit and your car's radio (please avoid using the channel to be occupied by the FM station).Support Voice control: You can Sending voice commands such as "Turn on display", "Turn off display", "Show front camera", "Show rear camera", "Show all cameras", only support English. Wireless Apple CarPlay & Android Auto The smarter, safer and more fun way to use your iPhone in the car. Apple CarPlay gives iPhone users an incredibly intuitive way to make calls, use Maps, listen to music, and access messages with just a word or a touch.Enjoy seamless connectivity and control of your Android smartphone in the car. Android Auto allows you to make phone calls, navigate with Google Maps and receive SMS messages. Plug and Play, Fit for All Cars This portable touchscreen unit comes with a strong stand with a suction cup can be wall-mounted at the smooth surface like the windshield, dashboard etc. You don't need to disassemble your car's console, keep your car original radio, perfect coexistence. Note: this unit can't be controlled by steering wheel or knob. How to Get the Sound from Car Stereo This unit has built-in speaker, but if you want louder sound, you can transfer it to your car's speakers: By FM radio transmitter, you can set the same FM radio channel on the unit and your car's radio (please avoid using the channel to be occupied by the FM station). Bluetooth Hands-free Calling This Portable Car Stereo has built-in speaker, you can transfer it to your car's speakers by FM radio transmitter, you can set the same FM radio channel on the unit and your car's radio (please avoid using the channel to be occupied by the FM station). Loop Recording After the memory card is full, the video will be automatically overwritten and saved without frequent manual formatting of the memory card. Even if there is a sudden power failure, most of the video data will be saved. TF Card Loop Recording After the memory card is full, the video will be automatically overwritten and saved without frequent manual formatting of the memory card. Even if there is a sudden power failure, most of the video data will be saved. Full color HD Camera The rear camera is small in size, and the hidden design will not affect the appearance of the body. The full-color lens allows you to see true colors at night and get a clearer picture behind the car. Both front and rear cameras support video recording. 7 Inch Full HD TouchScreen Monitor 7 Inch capacitive touchscreen, sensitive and bright, bringing excellent visual experience and smooth touch feeling. 7 Inch Smart Screen Player Screen HD 1024 x 600 Voltage 9-36V Installation method Vertical stand/Suction cup stand Compatibility Support 720P/1080P HD camera Working current 400mA Power 6W Video Two-way video split display with recording function Intelligent interconnection IOS CarPlay/Android Auto/Bluetooth music/FM transmission Voice control: support Cooling method Passive cooling Full color HD Camera Features Noise Ratio ( SNR) ≥69dB Horizontal viewing angle 160° TV System PAL/NTSC Waterproof Rating IP68 Minimum illumination 0.01Lux Power Supply DC12V Pixel 1280*720P Night vision images Automatic gain control, automatic white balance, automatic backlight compensation