... 1.Volume Control USB Laser Pointer 2.Red laser light 3.RF Technology 4.Volume control 5.Page up and down Volume Control USB Laser PointerProduct name ... <1mw&ClassIII<5mw Function:Red laser light,USB mouse function,Page up/down ,RF technology ,USB plug and play ... ,no need for driver,Volume controlOperating Systems: MS Windows 2000,XP, Vista Volume Control USB Laser Pointer ...