Korg microKEY Air 49-key MIDI Controller Keyboard Features: 49 Natural Touch mini keys let you play comfortably across 4 octaves Velocity-sensing keybed makes it easy to add natural expression to your performances Full set of hands-on controls includes a pitch wheel, a mod wheel, and octave selection Runs for about 30 hours on just 2 AA batteries or USB power for wired use Connect to your computer or mobile device via low-latency Bluetooth LE Core MIDI compatibility provides plug-and-play compatibility with any Mac computer or iOS mobile device USB provides all the power you need, even when connected to your iPhone or iPad Plug in an optional sustain pedal (not included) for damper control Includes USB cable and software from Korg, UVI, AAS, Propellerhead, and Ableton