B0778HL15M CME XKEY 37 LE Ultra Slim 37 Full Size Key Portable USB MIDI Controller Keyboard with Full Velocity Sensitivity

37 full-size keys (3 Octaves)
USB Powered (no external power supply needed)
100% MIDI compliant. Velocity sensitive. Polyphonic aftertouch. Octave +/- push buttons. Sustain button. Firmware upgradable via USB
Configurable via Xkey Plus free app for iOS, Mac OSX, and Windows.
Pressure sensitive Pitch bend and Modulation buttons, with continuous MIDI control data.