CME Xkey Air 37 Bluetooth MIDI Keyboard

Xkey Air 37 Silver
37 key ultra slim Bluetooth Controller with Full Velocity Sensitivity,
Polyphonic Aftertouch, Full-size keys. OSX, Windows, and iOS. Includes
breakout cable for direct MIDI out and expression pedal.
If you write music, then the Xkey 37 belongs in your mobile rig.