Technology:ingrared technology Function:laser pointer,page up /down,built in flash memory optional(64MB-16GB) Control ... dist Description:Technology:ingrared technologyFunction:laser pointer,page up /down,built in flash memory optional(64MB-16GB)Control ... .9*1.6cmUSB plug-and-play,no driver requiredIntegrated design:thumb mouseCustomer logo available:black color Hot prodcuts with ...