The space saving is done with F1 through F12 keys on the upper rim, but without edges, look on the photos to realizing it. And especially thanks to the merger with the keypad arrows and keys systems like Print Screen, fine and Delete.
There is a button to switch to numeric keypad keys or systems. It's still handy when you are used to type all those numbers by pressing the keys above the letters, not the numeric keypad.
For those who do not usually, adaptation is quick. And arrows are backlit in blue when going pretty arrows just fashion.
Being a gamer keyboard oriented, it has some key functions that I have not yet used but which prove to be brought quickly to the thumb.
The typing feel is good for a keyboard at that price. It is quieter than my old, but do not expect a non quieter keyboard, I would rather say "discrete".
The finish is very good, nothing to say about the one I received.
It's rugged enough air, but 1 month of use it is perhaps too early to form an opinion on it. To know that I use about 4-5 hours a day.
THE strong point: It is compact, really well thought out and very ergonomic.
In weak point, I have not been too push to the limit for a negative review.