... Transceiver,New 2.4GhzDear Friend,Kindly note for 1pc order,freeshipping by post airmail,no packing ... 2pcs,all with colorful blister window packing for you.ThanksFor any mixed order with other products ... DPICompatible System: Win 2000, XP, SP2, Vista 32/64 bit , Mac OS X(10.2.8) or higher ... bag, duffle bag, brief case, or purse for easy transporting Wireless foldable portable mouse Optical Foldable Arc ...