... reversal function♦.Bluetooth telephone book♦.Built is PIP/GPS/IPOD;♦.Subwoofer output;4X50W maximum power output Other functions ... playback ♦.Car backing display: Car reverse camera input (switch automatically) ♦.Language of OSD menu with DVD:Chinese,English ... English,Russian,Italian, Turkish,Japanese,German,French,Portuguese,Arabic etc.♦.GPS menu of language: English, Japanese, German, French, Spanish ...