Connect wirelessly to iPad, iPhone, Mac, or Windows
The microKEY Air supports Bluetooth Smart “Apple Bluetooth Low Energy MIDI”. You can easily connect wirelessly to iPad/iPhone music apps such as KORG Gadget, KORG Module, and GarageBand, as well as any MIDI-capable music production software on your Mac or Windows. Painstaking tuning of the Bluetooth capabilities means high stability and low latency, no strings – or wires – attached.

Lasts a month between battery changes
With an average of one hour of use per day, the batteries allow approximately one month of operation. And best of all, the microKEY Air runs on just two AA batteries.
To USB or not to USB?

microKEY Air can also be connected via a traditional USB cable. 

Since the microKEY is USB bus-powered, you only need a single USB cable to connect it to Mac or Windows. There's no need to install a driver; just connect it to your computer and start playing. The second generation newly supports connection to iPad and iPhone. Add an Apple Lightning - USB camera adaptor and one USB cable and your setup is complete, allowing you to access apps such as KORG Gadget, KORG Module, and GarageBand.

KORG Module and the microKEY are the best possible combination for a mobile performance environment. 

With the new microKEY which supports a damper, or the microKEY Air which provides a wireless connection via Bluetooth MIDI, your iPhone instantly transforms into a high-quality sound module. In your room, in a practice studio, when riding in a moving vehicle, or outdoors, it's easy to set up and immerse yourself in a superb playing experience wherever you are.
KORG Module for iPhone

Connect a pedal, and enjoy full control functionality
The 37, 49, and 61-key models provide an assignable switch jack for connecting a damper pedal. The 25-key model provides a sustain button that implements the damper function. On all models, you can use the octave buttons in conjunction with the key transpose function to play MIDI's entire range of notes.

The 37, 49, and 61-key models provide pitch bend and modulation wheels. 

The 25-key model provides a joystick that can also control pitch bend and modulation, as well as an arpeggiator function, giving you full control in spite of this model's space-saving dimensions, and providing a wealth of performance expression.

The microKEY comes with a serious collection of powerful music software titles including popular special editions of KORG Gadget and KORG Module plus the KORG Legacy Collection M1 Le which includes a plug-in version of the classic KORG M1 instrument. With microKEY Air you won’t have to purchase additional software; you can start creating music right away.