Product Hardware CPU: Samsung2440 (ARM9,400Hz) Memory: 64MB SDRAM + 64MB ROM Display: 4.0' TFT LCD Input Method: Handwriting; Soft Keyboard Audio: Build in Speaker Headphone: 3.5mm Audio Jack Communication Interface: USB 1.1 Data Storage: SD Battery: Build in re-charger Li-ion battery Power: Battery AC Adapter: 5V, 2A, DC Button: Defined with customer Backlight:LED GPS: Build in GPS module and build in patch attenna Operation Temperature: 0-50 degree Storage Temperature: -20-70 degree Product Software OS: Microsoft Windows 5.0 Application: Media Player: Soft decoding MP3/MP4 E-zine Viewer: TXT format Digital Album: Soft decoding Support *.bmp, *.jpg Calculator: Standard calculator Calendar: Standard calendar with calendar management Word clock: Standard word clock