Eliminator LEDARRAY Tri LED Mini Derby 9-Watt x 2<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> 2x 9W TRI LED RGBs </span></li><li><span class="a-list-item"> Sound Active， Sound sensitivity knob on rear </span></li><li><span class="a-list-item"> Multi colored back and forth motion， DC motor </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41wF16nLIHL.jpg" noproxy>