*Developed from Android OS,deeply customized & optimized. Comes with a lot of vechile-based features - Radio tuners, Backup Camera In, Dash Camera In, Bluetooth Handsfree, Steer wheel key control &more. Be aware that it has no built in DVD/CD disc receiver! Fast booting feature, allows it to be ready for operation within 2 seconds when car is ignited.It has never been faster than now to access to music/radio and enjoy it!</br>*Keep Original Steering Wheel Key Control functioning (based on resistance anolog signal input only ), Users are allowed to re-define & rebuild matching of steering wheel key with system function response. Google Voice command app is customized as a built in option for quick access.</br>*The panel size of this Android Car Stereo (M4271) is 173*97mm,and inner storage is 16G. Check the difference between M4171(16G,178mm*101mm),M4172(32G,178mm*101mm),M4271(16G,173mm*97mm),M4272(32G,173mm*97mm):http://bit.ly/2njCodC</br>*Built in GPS module, and pre-installed 1 map engine app: Google Maps,users need to download map data from the map app setting for offline navigation. Tomtom/iGO/HERE WeGo map are also supported</br>*Unlimited Micro USB Drive hook and up to 128GB Micro SD slot, expert-support(we fully understand our products, as well as general installing issues). So remember to write to us (support@autotolife.com) if you have any questions or problems with ATOTO product.</br></br>Product Description</br></br>*Product Model: M4271; <br>*Bulit-in Bluetooth handsfree w/ Stereo Music Playback,Contacts Synchronization. <br>*Built-in WIFI, connection to phone's hotspot could perform better with wireless internet(improved and is much better since March,2017). <br>*Highly integrated with 3rd party devices(USB Dash DVR,Mirror Link,BT OBD2,TPMS,DVD ROM box). <br>*Sleeping & Quick Booting - Start your car and access system within 2 seconds <br>* Full HD 7" 1024*600 Capacitive Touchscreen <br>*RAM: DDR3 1G. NAND Memory: 16Gb(M4272 has 32Gb available). CPU: MTK Soc-based Quad-core 1.5Ghz. GPU: ARM Mali-450 MP4 <br>*Built-in Max 4*45W Amplifier with RMS 4*24W(Vcc=14.4v,THD=10%) <br>*Built-in FM/AM Radio Tuner w/ RDS <br>*OS: Optimized Android 4.4 <br>*System Language: German, French, Italian, Spanish, Portuguese, Arabic, Russian, Japanese.<br>*Orignal Steer Wheel Control keys still work if it uses analog signal to control <br>Inputs,Outputs & Slots <br>*Back cam input <br>*AUX AV IN <br>*Audio Out <br>*Subwoof Out <br>*One Micro SD slot - to store media files,dash DVR records(up to 128Gb) <br>*3*USB Slot - Allows to connect with up to 256G USB Drive, and optional USB devices(3G Modem, Dash DVR Cam,or smartphone) <br>*2 Din size:178mm* 100mm, with front panel size 178mm*101.5mm <br><br>Features: <br>*ONLY takes less than 2s to boot - listen to radio or musics without waiting <br>*FULL EasyConnect App features (compatible with latest Android 7.0! Other sellers can't), and Google Voice Command compatible(voice dialing,voice opening local App,voice Q&A) <br>*MORE usefull options from built in Steering Wheel Study App for user to match & re-define,especially voice command shortcut option <br>*Music name/singer will fully display from headunit when play music from smartphone via bluetooth A2DP <br>*Be ABLE to install most apps: Tomtom,Waze, iGO, Google Maps,Here,Spotify, Pandora, Play Music, Amazon, & more <br>Notice: This unit does not have ipod interface/headrest video output</br><br/>http://www.amazon.co.uk/gp/product/B06XKTXS3D