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