... -play (4) USB flash memory, ranging from 0-4G *Green Light Wireless Laser Pointer*Page up/down function 1.COMPONENT ... : support PPT, WORD, EXCEL, Internet Browser, Picture Browser, etcBuild-in USB Flash(Optional Function)RF technology, control distance to 10mUSB ... 6.PRODUCT COLORstock:black, silverorder:black, silver, white, red, blue, green, yellow etc.. 7.WARRANTYThis product is warranted for 1 year ...