Portable wireless Bluettoth MIDI keyboard with 25 dynamic mini keys. MicroKey provides a programmable joystick, arpeggiator, sustain/tap and Up / Down buttons for octave change. It is compatible with PC and Mac computers and Apple mobile devices by Bluetooth or USB cable. It is powered directly from the USB input or by 2 x AA batteries when operated wirelessly. Batteries are not included, USB cable is included. Dimensions: 395 x 131 x 52 mm. Weight: 0.67 kg. Finished in black.