An ultra-slim and full-featured MIDI controller keyboard you can take anywhere. Precision cut aluminum frame provides natural key separation for 37 full-sized keys. Key design depresses evenly for added playability. Advanced sensing technology provides 128 levels of velocity sensitivity and full polyphonic aftertouch. High-resolution pitch bend modulation buttons utilize continuous MIDI control data. Octave up and down buttons give you access to an extended note range. Fully USB bus powered and firmware updatable via USB.