Very good report key and excellent quality / price: Works perfectly on Windows 7, 64 bit. Registration (direct or planned) of a chain while watching another, all seamlessly (provided you do not plug it into a hub as said in the notice, if indeed that train a bit). With the supplied software, you can watch one channel while watching another by an insert (useful to look at information about a chain awaiting the start of the film to another). The sensitivity of the supplied antenna is right for its size (13 cm).