TOSA Cylinder Bluetooth Speaker， Black<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Metal shell painting UV oil </span></li><li><span class="a-list-item"> Built-in rechargeable 500mah lithium batteries， max working time around 4 hours </span></li><li><span class="a-list-item"> Horn power: 3W; SNR&gt;=90DB; Frequency Range: 60Hz-18 KHz; THD&lt;=0.5%; Charge Cycle&gt;=500 </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31JXsIyCRSL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31Be0T8Bu2L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31wOiS1AukL.jpg" noproxy>