Check the listing for details. Korg microKEY Air-49 49-key Bluetooth Keyboard Controller. Condition: New. Listed at 239.99 USD. Talk about portable - when you're on the move with your Korg microKEY Air MIDI controller keyboard, you don't even need to remember to pack a USB cable! A first among the cool MIDI keyboards we've seen at Sweetwater, this Bluetooth-equipped controller can connect wirelessly to your computer or mobile device, providing you with about 30 hours of low-latency virtual instrument control with just a pair of AA batteries. Whether you run it wirelessly or connect via USB, this 49-key microKEY Air makes mobile music creation a breeze. Dedicated pitch and mod wheels, plus a sustain pedal input also come in handy. Top it off with a sweet software package including titles from Korg, UVI, AAS, Propellerhead, and Ableton, and you can't go wrong with a microKEY Air.