(1)Green Light Wireless Laser Pointer (2)Page up/down function (3)USB plug-and-play (4) USB flash memory, ... ranging from 0-4G *Green Light Wireless Laser Pointer*Page up/down function1.COMPONENT Transmitter 1 Receiver 1 Battery 1 Manual 1 ... on; release to turn off.Page Up: support PPT, WORD, EXCEL, Internet Browser, Picture Browser, etcPage Down: support PPT, WORD, EXCEL, Internet ...