Check the listing for details. Korg microKEY Air-61 61-key Bluetooth Keyboard Controller. Condition: Very Good - Refurbished. Listed at 251.99 USD. Ditch the cables and enjoy wireless freedom with a Korg microKEY Air MIDI controller keyboard! 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 61-key microKEY Air provides you with a full range of expression, without hogging desk space. 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.