Samsung 2440A 400MHZ processor, High sensitivity GPS receiver, 48 channels in Search mode and 12 channels "All-in-View" tracking. 3.5"TFT 65K real color touch screen, with speaker, WinCE 5.0 for OS. SD slot, USB 2.0 Full, Internal Flash ROM 64MB, Supporting Audio (MP3, WMA, WAV) and Video (AVI, WMV, MPG, MP4) playback function, can also be use as Photo Viewer and book reader (TXT, CHM, PDF), 800mAH bulid-in Li-Polymer battery wiht professional charging control to prolong the battery lifetime