Yamaha

Bluetooth wireless MIDI adaptor for connecting instruments with a USB TO HOST terminal to your iOS devices (iPhone/iPad/iPod touch) or Mac.

Set your music free with wireless MIDI connectivity
Simple and easy wireless connection of instruments with a USB TO HOST terminal to iOS devices and Mac makes it easy to use a wide range of music applications wirelessly for even more enjoyable performing and composing.
*not compatible with Smart Pianist App

Specifications
Power Consumption: 170mW
Bluetooth (Ver4.0; GATT compatible), MIDI over Bluetooth Low Energy - Compliant
Compatible Devices: iPhone/iPad/iPod touch, Mac with Bluetooth 4.0 installed
Compatible OS: iOS 8 or later, OSX Yosemite or later
Dimensions: 45 mm 12 mm 40 mm
Weight: 10g