3.5 inch 240*320 LCD color screen, with touchable screen AT440-1 processor (324Mhz) OS: Based on Microsoft Windows 5.0 CORE Multi-language support with input method Internal Lithium battery USB 1.1 (full-speed) Support WMV,AVI,ASF,MP3,WMA,WAV media format Txt Format Files Browser(E-book) Photo Scan: JPEG,BMP TMC function(optional) SD memory card expansion Headphone/built-in speaker SD Card/Map (option) Locates:10 Meter. 90% Sensitivity 0.1 m/s.