EVIZIAN Powerful 2X5W Bluetooth Speakers Enhanced Bass Z3 Black Wireless Speakers Double 5W speakers and enhanced BASS, combined with resonator delivers a qualified listening experience even CROSS A WALL Outstanding audio performance delivers a qualified listening experience with SNR more than 90db Up to 10 hours Playtime by rechargeable Lithium Battery with 1800mAh Capacity Available connect to iPhone, iPad, iPod, smartphones, PC with 3.5mm audio cable connected Sensitive touch button easy to control, Support TF card, USB, AUX, FM and Hands Free MIC