... Receiver: Ultra Mini Storable Wireless Foldable Mouse,Snap-in Transceiver,Brand New USB 2.4Ghz Wireless Mouse Specification:Device Type: Wireless ... : Win 2000, XP, SP2, Vista 32/64 bit , Mac OS X(10.2.8) or higherScrolling Capability: YesVertical Scroll: YesWireless Frequency ... . Thank you very much! Wireless Foldable Mouse,Snap-in Transceiver,Brand New USB 2.4Ghz Wireless Mouse