Specification: 1.) Display: 3.5" TFT LCD with touch screen,320?40pixe 2.) CPU: Samsung 2440 3.) Operation System: Microsoft Windows 5.0 4.) GPS Module: SIRF StarIII, 20 channels 5.) Nan Flash Rom: 64MB/128MB/256MB Flash ROM 6.) Expansion card: SD/MMC 7.) USB: 2.0 Full-Speed 8.) Audio/Video Format: MP3, WMA, WAV / WMV, MP4, ASF, AVI 9.) Photo Format: GIF, JPEG, PNG, BMP 10.) E-book reader: TXT 11.) Additional functions: Video player, audio player, picture browsing 12.) Battery: 1400mAH Li-Polymer battery 13.) AC adapter: 5V, 2A Current 14.) Car adapter: 5V, 2A Current 15.) Temperature 0~40