Konstar Wireless Speaker with Dual 10W Drivers and Built in 4000Mah Battery - Black<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Superior Sound Quality:Advanced digital sound，noise/wind reduction technology，and unique loudspeaker cavity structure to deliver premium acoustic sound，crystal clear balanced bass(20W) </span></li><li><span class="a-list-item"> Incredible Battery Life:Built-in high capacity rechargeable Li-ion battery(4000mAh)， supports up to 20 hours playing time at the volume to 70% of the maximum volume </span></li><li><span class="a-list-item"> Bluetooth 4.0 Technology: Compatible with all Bluetooth-enabled devices. Instantly connect to your Iphone/Ipad or tablet from up to 10m away. SoundCore reconnects automatically to the last device used. Built-in micphone for hands-free calls. so you can conveniently pick up a call by this bluetooth speaker </span></li><li><span class="a-list-item"> This bluetooth speaker with USB TF Card Slot You Can Play the Mp3 Format Music Which Storaged in Usb Tf Card，Built-in Microphone， Support Hands-Free Calling </span></li><li><span class="a-list-item"> What you get: Konstar Bluetooth speaker， Micro USB charging cable，Aux in cable，user manual ，remote controller and friendly customer service， and 30-day money back guarantee </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41VapmBuHPL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51L2RGABrsL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51nV5iEJ4eL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/513jDpgBM5L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51uL4j67YqL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/5133LV%2BZMqL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41xNqDpfXIL.jpg" noproxy>