Product name: wireless presenter
Size:105*45*17.5mm
Unit weight:58g
Battery: 1 pc CR2450
Output power:ClassII<1mw&ClassIII<5mw
Features:1.Laser pointer
               2.USB mouse function
               3.Page up/down
               4.RF technology
               5.USB plug and play,no need for driver
               6.Oprating Systems: MS Windows 2000,XP, Vista compatible