Product features:
*92 key ( 74 standard keys +18 media keys )
* built-in 2.4G wireless receiver
*90 degrees turning touch panel
* backlight function
*DPI adjustableLithium battery
*810mA* page down keys
* about rat function keys

Size: 148mmx97mmx19mm
Weight: 109G
Operating temperature: -10 °C, 55 ° C
Battery: lithium battery
Standby time: 500 - 700 hours
Working distance: 15m
Transmission power: Max +4 dBm
Working voltage: 3.3 V
Operating current: < 50mA
The charging current: < 300mA
Sleep current: < 1mA

System requirements:
Windows 2000
Windows XP
Windows Vista ,Windows CE, Windows 7
Linux(Debian-3.1,Redhat-9.0 Ubuntu-8.10 Fedora-7.0 tested)