The Alesis VI49 MIDI keyboard is a high-performance controller with four knobs and multi-function buttons. - Brand: Alesis - Model Name: VI49 - Features: Pitch bend, modulation wheel - Control Knobs: 4 adjustable knobs - Function Buttons: Full level, note repeat, arpeggiator, tap tempo, octave up/down buttons - Swing Setting: Swing function available Thank you for viewing.