4" IR-360 Navigator Features: GPS Navigator/ ElectronMaps/ MP3 player/ MP4 player/ Digital photo/ EBook Parameter: LCD Display: 4" TFT, 480*272 pix CPU: Samsung 2440 400MHZ GPS Module: SIRF III more 20 channels Touch panel Audio format: MP3, WMA, WAV Video format: JPG, GIF, BMP, PNG EBook fromat: TXT System: Windows CE 4.2 Size: 150*75*25mm