Tech 21 MIDI Mouse<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> 3-button MIDI foot controller </span></li><li><span class="a-list-item"> It can be powered by standard 9V adaptor， 9V battery， or phantom power via MIDI cable </span></li><li><span class="a-list-item"> Transmits up to 128 patches on 16 selectable MIDI channels </span></li><li><span class="a-list-item"> The Tech 21 MIDI Mouse is a compact， portable， and exceptionally user-friendly 3-button MIDI foot controller </span></li><li><span class="a-list-item"> It can be powered by a standard 9V adaptor， 9V battery， or phantom power via MIDI cable </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51-lit8FGvL.jpg" noproxy>