It is velocity sensitive and has aftertouch fratar keys. The touchstrip is a nice physical addition and you can map it to any midi cc you want, there are 2 pedal inputs and you decide the behaviour they will have (momentary o switch), they are not predefined as 'sustain' or 'expression' like probably all other keyboard controllers have.

The lightguides on the keys are a plus too, you have to remember that to fully get out everything from this keyboard you have to use the software Komplete Kontrol, wich is kind of a wrapper for Kontakt and a lot of VST instruments and efx plugins that conform with the Native Kontrol Standard wich automaps al l parameters inside komplete kontrol for fast tweaking, but you can use it without Komplete Kontrol and map everything yourself in MIDI Mode like any other Midi Controller out there. This keyboard controller by Native Instruments has one of the best features a midi controller can have, onboard color screens so you dont need to be using the mouse and staring at the pc screen (most of the time at least), you can even eliminate the use of those if you combine it with a MIDI controller software on an iPad, the feedback on the screens along with the easy and hands on navigation buttons and knobs really is an improvement and speeds up production and composing workflows. One of the best modern MIDI Controllers out there

Komplete s61