The build quality is excellent; the size compact; the keys about the same size as those on a laptop; the length about 40 cm, not much longer than my widescreen laptop; the keyboard light and thin, yet robust; the travel and resistance of the keys good; there is an integral numeric keypad to the right of the main keys. And it looks smart.
If Num Lock is not enabled on the numeric keypad, keys 2, 4, 6 and 8 double as cursor control keys (Down, Left, Right, Up); 1 and 7 double as End and Home, respectively; 3 and 9 double as Pg Dn and Pg Up, respectively; 0 and . double as Ins and Del, respectively. (There are also dedicated Left, Right, Up, Down, Home, End, Page Down, Page Up, Insert and Delete keys.)
A couple of things prevent me awarding this keyboard 5 stars. Firstly the 0/Ins key on the numeric keypad is next to the Right cursor control key and I frequently press the Ins key instead of, or as well as, the Right key, messing up my typing. Secondly, there are narrow Home and End keys on the top row of the numeric keypad and they are the same narrow size as the top row of keys on the main part of the keyboard (which includes the function keys). As with a laptop, the top row of keys is smaller than the other keys.
If you are looking for a compact keyboard with keys about the same size as those on a laptop, with high build quality and integral numeric keypad, then this would be a decent choice. But you may find the positioning of some of the cursor control keys a little awkward.