37-Key MIDI Keyboard, With Bluetooth for wireless operation on iPad, iPhone, Mac or PC, Compact natural touch mini-keyboard, Pitch Bend Wheel, Modulation, Octave Shift button, Damper Pedal connection, Powered via 2x AA battery or USB, Dimensions (W x D x H): 565 x 139 x 54 mm, Weight: 1 kg, Incl. KORG Software Bundle Code and USB cable*@+System requirements wireless:@+@+*, Mac with support for Bluetooth 4.0 or later and OS X10.10 Yosemite or later or iPad / iPhone with support for Bluetooth 4.0 or higher and iOS8 or higher, PC with Windows 8.1 or later (32-bit / 64-bit) and Bluetooth 4.0 BLE and MIDI driver*@+System requirements USB:@+@+*, Microsoft Windows 7 SP1 or later (32-bit / 64-bit), Mac OS: Mac OS 10.8 Mountain Lion or later, iOS8 or higher