i use mx900 with my macbook pro. great mouse. you can't use all of the buttons on it in OS X you have to get gamepad companion and manualy assing buttons. i use rechargeble batteries they last about 3.5 days with medium usage, what sucks about it is it does not have a switch on it to save batteries. but other then that its perfect. i don't think you can buy this mouse by it self, it comes with e keyboard. i got mine on ebay for a great price. i would also recomend MX1000 with has the swich on it and also higher DPI and its laser where MX900 is optical. i hope this helps you.