JBL Synchros E45BT Wireless On-Ear Headphones (Teal)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Plug 3.5mm Dynamic driver 40mm </span></li><li><span class="a-list-item"> Frequency response20Hz – 20kHz </span></li><li><span class="a-list-item"> Impedance 32 </span></li><li><span class="a-list-item"> Battery lifetime16hr </span></li><li><span class="a-list-item"> Bluetooth version 4 </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41jgX7DwDEL.jpg" noproxy>