Bluetooth 4.0 Speaker, 6W Output from Dual 3W Drivers, with Super Bass, Portable Wireless Speaker for iPhone, iPad, Samsung, Nexus, HTC and etc Incredible sound with full range output, enjoy passive radiator for stereo, crystal- clear and subwoofer sound. With the beautiful aluminum alloy housing and the metal cutting technology, we can easily feel the sleek simplicity. Portable design, small size(6.3x1.4x1.8 inches), light weight(10.1 oz), it is suitable for carrying in your pocket. Compatible with any devices,it will be the best partner of your iPhone, iPad, iTouch and more, just like Batman and Robbin. Simply slide the on/off button to "on" position, it is automatically ready for pairing. and connect to the last-connected device.