The CME Xkey 37-Key Air Mobile Bluetooth MIDI Controller takes the impossibly compact design and weight of the company's flagship model and infuses it with wireless technology for an even more versatile keyboard. Featuring a full-size set of 37 keys, octave shifting, and pitch bending, this model's onboard Bluetooth capabilities allow you to play and create music anywhere, anytime. Weighing under two pounds, this model works equally well as a dedicated desktop set of keys or an on-the-go controller for playing electronic sets.