3.5 inch 240*320 LCD color screen, with touchable screen AT440 processor (300Mhz) OS: Based on Microsoft Windows CE.Net 5.0 CORE SDRAM64MB,Flash ROM128MB Txt Format Files Browser(E-book) Photo Scan: JPEG,BMP MP3/MP4 playback Multi language SD/MMC memory card expansion Headphone/built-in speaker Locates:3 Meter. 90% Sensitivity 0.1 m/s. Localization time:Localization£º0.1 s Dimension:125*80*17mm