Harman Kardon Onyx Studio 2 Wireless Speaker System with Rechargeable Battery and Built-in Microphone White<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Bluetooth 3.0 </span></li><li><span class="a-list-item"> Rechargeable Battery </span></li><li><span class="a-list-item"> Two 3" woofers， two 0.75" tweeters and 2 passive radiators </span></li><li><span class="a-list-item"> 15W x 4 biamplification </span></li><li><span class="a-list-item"> Speakerphone </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51VaSOHe7XL.jpg" noproxy>