You no longer have to compromise performance in your portable audio experience. The Diamond Mini Rocker Bluetooth Wireless Portable Mobile Speakers are a pocket sized power house. Combined with Bluetooth wireless streaming a built in patented retractable cable system is also included for your wired audio devices. Wireless or wired. You don't have to worry about carrying extra pieces or cords getting tangled. These portable mini speakers magnetically fasten together and are only 2"x4", making it the perfect size for quality sound on the go.