Go anywhere compactness meets great sound and a range of colors. Combined with built-in Bluetooth wireless streaming, the BT64 is ideal for the globetrotting fashionista in everyone. Works with any Bluetooth-enabled device - Bluetooth is a short range wireless communication technology that is both robust and energy-efficient. The technology allows easy wireless connection to other Bluetooth devices, so you can play your favorite music from any smartphones, tablets or even laptops including iPod or iPhone on Bluetooth-enabled speaker easily. Built-in rechargeable battery for music playback anywhere - Play music out loud - anytime, anywhere. The built-in rechargeable battery lets you enjoy your personal music without the fuss of entangled power cords and the inconvenient search for an electrical outlet. Enjoy great music with the freedom of portability now. Built-in Digital FM radio - Digital Radio is, on top of FM analog transmission, a new way of broadcasting radio via a network of terrestrial transmitters. It provides listeners with more choices and information delivered in clear, crackle-free sound quality. The technology allows the receiver to lock on to the strongest signal it can be find. With digital stations there are no frequencies to remember, and sets are tuned by station name, so there is no returning on the move. Easy playback from MicroSD Card - Simply load the card with the desired content, plug it into your player - and never have to worry about running out of entertainment choices again. Built-in microphone for hands-free phone calls - With its built-in microphone, this speaker also works as a speaker phone. When a call comes in, the music is put on pause and you can talk via the speaker. Call for a business meeting. Or, call your friend from a party. Either way, it works great.