Centrality Atlas-III 400MHz CPU WinCE.Net 5.0 OS 64MB flash and 64MB SDRAM SD/MMC slot and USB 2.0 GPS:Up to 32 channel Arrow and Voice guidance Automatic Routing and POI search Multi-language OSD and voice Address book Built-in 1W speaker 3.5mm stereo headphone jack Audio/Video player Photo viewer and movie player for multi format E-book reader TXT 4.3inch touch screen TFT LCD 480*272 pixels Operating: -10 to 60 Storage: -20 to 70 Operating: -10 to 60 Option: Bluetooth,TMC