JL-M501 2.4G wireless keyboard mouse combo

1) Wireless optical mouse and keyboard with 2.4Ghz radio frequency technology. 2)Mini receiver design and embeded in the mouse when notuse 3)High resolution of 1600DPI and hotkey for 800DPI and 1600DPI adjusting 4)Work distance:within 10 meters. 5)Radius of 360 degree,Smart automtically sleeping and wake-up saving power function. 6)Powered by2 AA batteries for the keyboard and 1 AAA for the mouse 7)convenient scroll wheel,working freely on usual surfaces 8)Compatiable with Windows 98/2000/XP,NT4.0, Me, Linux with 9)Power on/off switch 10)Plug and play. 11)16 channels and automatically changing to avoid interference. 12)Radio frequency range::2402MHz-2480MHz 13)Maximum acceleration:14inch/second 14)Rating working voltage:1.5V 15)Rating working current:20mA