Compared to Logitech MK520 I find this keyboard clearly better processed and chic. They are reduced to what is necessary, what pleases me well. The writing experience is however not nearly as precise and comfortable as I am used to from my Lenovo laptop. One can not expect perhaps at this price.
But I have the following criticisms: I produce this keyboard comparatively many false attacks, which is not happening to me at another keyboard (I have for a man an average hand and finger size).
The second and decisive for me gripe is that for me to switch on the function keys (you have to press an extra button) was not working. I managed not at Lenovo or elsewhere to find support information.
The wireless mouse is small, fits comfortably in your hand and feels pleasantly. But I could not use the scroll function in Firefox.
Conclusion: As I otherwise only Lenovo components used (T420 + Docking Station) had me for a product of the same company clearly too many problems. I think the keyboard for prolific writer suitable for no good.
Now I lay something on top of it and I'll try the Logitech K800 Wireless Illuminated Keyboard and hope I finally get a reasonable Writes keyboard.