(1)Black Screen Wireless Presenter Laser Pointer (2)Red Laser Pointer (3)Page Up/Down (4)PPT Black Screen Black Screen ... Wireless Presenter Laser Pointer1.Product compositionTransmitter 1 Receiver 1 Battery 2 Manual ... support PPT, WORD, EXCEL, Internet Browser, Picture Browser, etc c.Page Down: support PPT, WORD, EXCEL, Internet Browser, Picture Browser, ...