Yamaha UD-BT01 | Wireless Bluetooth USB to Host MIDI Adapter Wirelessly connect your iOS devices (iPhone/iPad/iPod touch) to your instrument with Bluetooth and avoid having to reconnect every time you play Use music apps without cables and enjoy the freedom that wireless technology brings to your performances Controller apps allowing one-touch configuration of Digital Pianos' internal metronomes and other functions Customize digital drum kits using an intuitive app interface Compatible Devices: iPhone/iPad/iPod touch, Mac with Bluetooth 4.0 installed