VtoSmart Stereo Waterproof Outdoor Portable Bluetooth Wireless Speaker,Louder Dual-Driver and Built-in Microphone Hands Free for iPhone iPad Samsung Nexus HTC Laptops and More...(Gray) High quality assurance: Adopt double full-range loudspeakers (2* 40mm 3W) with super bass diaphragm & separate loudspeaker cavity, fully expresses a wide variety of music, best for music enthusiasts. Wireless bluetooth transmission: Applied Bluetooth technology, get rid of your hassle that audio cable is too short or too long. Place and play the speaker at any where you want. Hands-free call: Built-in microphone, connect the speaker with the phone via bluetooth, realizes an ultra-clear phone communication with 0 radiation. Implemented with 2*3W total acoustic drivers and ultra-small size produce a wide audio spectrum. The newly designed passive radiator could provide strong bass without distortion even at highest volume. Novel appearance design: Applied ABS plastic + iron mesh + silicone pad material, perfectly makes it reliable, chic & high-end. Universal compatible for iPad, iPad2, iPad mini, iPhone, Samsung Galaxy, HTC, Nokia and other bluetooth-enabled devices.