Presonus Ceres C4.5BT 2-Way Powered Speakers with Bluetooth<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Bluetooth wireless audio streaming for use with smartphones， tablets， and other computers </span></li><li><span class="a-list-item"> 4.5-inch Kevlar low-frequency transducer </span></li><li><span class="a-list-item"> 1-inch (25 mm)， ultra-low-mass， silk-dome， high-frequency transducer </span></li><li><span class="a-list-item"> 25W/side Class AB amplification </span></li><li><span class="a-list-item"> Treble and Bass Acoustic Tuning controls let you create a more accurate listening environment </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41wbIHA5PzL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41uiWhVV3DL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/01G2aSYe7yS.png" noproxy>