... up/down function (3) Radio Frequency: 315/433MHz (4) USB plug-and-play * Wireless Red Laser ... Pointer Pen* Page up/down function* Radio Frequency: 315/ ... WORD, EXCEL, Internet Browser, Picture Browser, etcPage Down: support PPT, WORD, EXCEL, Internet Browser, Picture ... COLORstock:black, silver,blueorder:black, silver, white, red, blue, green, yellow etc.. 7.Application ...