Usb midi keyboard and 61 keys.
1 jack for sustain.
Pitch Bend and Modulation.
A volume fader.
3 buttons for octave and change the setting.
Setting a classic master keyboard base (without controllers other than the bare minimum)
Powered by USB or transformer (not supplied)
I chose this keyboard for the number of octave and that it does not own controller (I have enough access to my studio with my VA or analog and control freak)

UTILIZATION

Touched synth pleasant, not too noisy mechanics.

OVERALL OPINION

I use it for a few months.
I am satisfied. Velocity responsive.

Minimum: transformer not supplied, damage to non usb user.