Detailed Product Description Wireless usb laser presenter, rc laser pointer, remote control laser pointer. usb presenterSize:145*13(Dia)mmMaterial: BrassBatteries:3pcs AG13Function:red laser pointer, page up and down, optional:flash memorySystem: windows98/2000/ME/XP/Linux/Mac osIt support word ,excel. powerpoint ,.ACDsee. Acrobat readerControl distance: over 15mCertificate:CE&ROHS