2.4GHz Mini Keyboard K03 Wireless Keyboard with Mouse
Features:
Wireless RF (radio frequency) 2.4GHz
Operation distance: 10 meters ( 32.8 feet )
Power conservation mode during times of no movement
PC USB connector
Compatible with Windows 2000/XP/VISTA
With slim link office keyboard
Tracking ball resulution: 800DPI
Powerful office function 78 keys and 35 hotkeys 
Optical frequency: 2.4Ghz radio frequency 
Operating current : keyboard: 8mA max, receiver: 30mA max
FN: Num local change function
Powered by 2 AAA batteries