TF/Micro SD Slot:2 Din:Double Din RAM:4G Interface:RCA Special Feature:Built-In Speaker/Microphone,wifi function,Support Steering Wheel Control,Support 3G Network,Support 4G Network,Support Can-Bus Operating System:Android Voltage:12V Item Weight:5kg Special Features:Built-in Gps,Charger,Mobile Phone,MP3 players Digital Media Format:Mp3,MP4,WMA,JPEG OSD Language:Chinese (Simplified),Chinese (Traditional),albanian,Arabic,Belarusian,Bulgarian,POLISH,Boolean text (Dutch South Africa),Danish,German,Russian,French,Filipino,finnish,Haitian Creole,KOREAN,Catalan,Lithuanian,Maltese,Malay,japanese,SWEDISH,Slovak,THAI,Turkish,UKRAINIAN,HEBREW,Greek,Spanish,hungarian,Italian,indonesia,English,VIETNAMESE Display Size:2.5" Origin:Mainland China Mercedes-Benz Model:S350 Certification:CE,FCC Car Surround:Mercedes Benz S Class S350 Steering wheel control:Black/Wood Suit for:Mercedes Benz S Class S350 Original function:Yes Radio Tape Recorder:Built-in WiFi Receiver:Built-in WiFi Receiver APPS:You can download app in playstore Android unit:Optional Aircon board:Optional Car Surround Android unit and Aircon board:Optional