... 16:9 high definition touch screen, ease of handwriting input Transmission Interface: USB2.0 Audio output: built-in speaker, FM launches ... polymer battery Machine Dimensions: 128.5 * 84 * 15.5mm Supported AV-IN input Packing devices: Host, power adapter, stylus, USB data ... cable, headphones, car bracket, car charger, warranty card ITA4802: with AV-IN and FM function (you can add Bluetooth function)