Roland AX-EDGE-W 49 Key Shoulder Worn Synthesizer (White)49 full sized keys with velocity and channel aftertouch 4 parts + vocoder with mic Input 320 programs and over 500 preset tones for keytarists 79 types of part multi effects and part EQ, 79 types of program multi effects, chorus, reverb, master compressor, and master EQ Tone Remain function switches sounds seamlessly without unnatural sound cutoff Ribbon controller, modulation bar, and assignable controls for expressive performance Up to 4 hours of