Very good ergonomic keyboard/mouse combination
The keyboard is very pleasant, much nicer than a conventional keyboard. The detachable numeric keypad allows for a more comfortable typing experience with the arms in a more natural position while maintaining a standard keyboard width.
The mouse, without being as vertical as other ergonomic mice, is very pleasant to use and seems to me to be a fairly good compromise (and works perfectly with the whole).
Two drawbacks though: the mouse lacks a next button (not too bad in use I think) and the T-key on my keyboard is not properly depressed which makes it feel a bit weird when typing (I couldn't get it to go in properly).