What can you say about this Bluetooth device yet? The Mouse is just in my big paw very good in the hand. It is also very sensitive and can be very precisely move with their cursor over the screen. For a mouse, it is a good all round machine that for gambling games like XIII and to work with programs such as Cinema 4D is ideal. Who in his computer already Bluetooth inside the charging station needs only to store's but it is also nice to get to the charging station a Bluetooth hub. Bearing in mind that a Bluetooth Doongle so costs around 30 euros, the MX900 is even spot cheap. One shortcoming there are unfortunately: unfortunately Anyone who has a Macintosh can not use the two thumb buttons. The software from Logitech does not exist for the Mac. As it stands at present there are no plans of Logitech, to fruition software for Mac. Very pity for an otherwise perfect device. Conclusion: Despite the excellent characteristics I need to take a star for Macintosh systems of Mouse because of the support of the manufacturer. If Logitech still the software for the MX900 for Macintosh REPLACE the MX900 is definitely a 5-star product. Finally, my configuration with the I operate the MX900: iBook G4 @ 933MHz Bluetooth integrated (The charging station is really just for charging the batteries ;-)) Mac OS 10.3.4