?<strong>Features:</strong> <br>USB 37-Key MIDI Keyboard controller. <br>Control switch for octave up or down (-4 to +4). <br>External socket of USB Jack(transmit power and MIDI signal). <br>Support for iPad£¬ for Windows@ XP &amp; Mac OS X. <br>Protect foam to prevent bump when you play. <br>Comes with keyboard 2 trays and USB cable. <br><br><strong>Specification: </strong>? ? ? ? ? ? ? ? ?? <br>Material: Plastic ? ? ? ? ? ? ? ? <br>Item Size: 53 * 18 * 4cm / 20.8 * 7.1 * 1.5in <br>Item Weight: 1355g / 47.8oz <br>Package Size: 65 * 23 * 12cm / 25.6 * 9 * 4.7in ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? <br>Package Weight: 1810g / 63.4oz <br><br><strong>Package List:</strong> <br>1 * MIDI Keyboard <br>2 * Tray <br>1 * USB Cable <br>1 * User Manual (English) <br><br><strong>Note:</strong> <br>The cable of connecting for iPad£¬ for Windows@ XP &amp; Mac OS X is not included.