Touch and USB. But above all the possibility of having a real keyboard to touch heavy format 5 octaves, reasonably portable.
It is also the choice between noon and noon usb classic.
The midi-usb is enough to power the keyboard. So a single cable usb a sustain pedal jack and everything is ready to play.

UTILIZATION

The feel is very "musical" for my taste, that is "solid" and very expressive.
By far the best I've ever had to touch the fingers.
For instruments that have no dynamics, I also used now in preference to my other semi-weighted keyboard touch is so nice and "suggestive".
For someone used to a real piano, no change of scenery. After it is a matter of virtual instrument or sound module.
The manual is rather "elusive", but sufficient for my use.

OVERALL OPINION

For nine months, still happy.
The value for money is excellent, even if it is not given.
No way to change.