For product:
Product packaging has, as usual, Apple, in perfect harmony with the product, the remote control fitted perfectly into it, pretty impressive work. The remote itself is been expected well, very well made and looks very classy. The exterior feels like the surface of a MacBook Pros from 2006, estimated the same magnesium aluminum alloy was used, top!
The coupling with the MacBook worked without problems, it popped to the next one unknown to me Menu on over which the locally stored music and other media could be opened using the remote control.
The operator responds and fix precise, the battery runtime and to use Radius I can not say anything yet, the information will be supplied.
The only drawback: The ring, through which the remote control can be used to control, sublime, in the photos of the ring acts rather lowered. In itself, it does not make more of a difference when it comes to ease of use, however, breaks the grandeur the line of design, looks a bit strange.
Addendum: The remote control is no longer compatible with the new Retina models and the new MacBook Air, as they have no infrared receiver more. So far there are no really good deal to work-around to the problem, for example, with a USB IR receiver.
So far there is no successor. Therefore, only a conditional purchase recommendation.