Inergy Sound Storm&trade; Ultra-Mini Portable Bluetooth Wireless Speaker / Pocket-size Wireless Bluetooth speaker with amazing sound quality for it's size with a range of over 30 feet! Also compatible with non-Bluetooth devices such as computers and mp3 players via the 3.5mm auxiliary jack. Built-in mic lets you talk to your friends and family hands free! Speaker has built-in mini SD card slot allowing you to pre load your music to the memory card (sold separately) and not worry about carrying around your phone or mp3 player. (must remove memory card to use Bluetooth function.) 3W Speaker output