Microprocessor: 80MHz Hitachi Hitachi SH3 interface: 3 4mm banana hole built-in memory (RAM): 32M Infrared data port: Maximum rate of 115kbs / s, the maximum distance of 30cm System card: 1GB or higher operating environment: -10 ~ 50 ° C Protection: IP51 (front) Expansion Module: 32M Storage: -20 to 55 degrees Celsius (with batteries), -20 to 60 degrees Celsius (without battery) Keyboard: 25 keys, four operating keys, 12 alphanumeric keys, four shoulders, four function keys and the key to open the battery: Rechargeable lithium-ion battery, can be used 20 hours, 100 ~ 240VAC charger charger: Mini DIN6 pin socket upgrade requirements: Winxp operating system, CD-ROM, seismic network can connect to the internet: 1m to the concrete floor is no problem landing weight: about 0.9KG, with battery Humidity: 0 ~ 95% (no condensation) Display: 1/4VGA (240 * 320 pixels); Color 8.9cm touch screen, auto-dimming display