Motorola Atrix 4G Android Phone (AT&T) Portable Speaker Docking Station ( BLACK ) Powerful balanced sound from two custom-tuned speaker drivers!!! Portably designed, protective case for hours of music wherever you go!!! Compatible with any audio device with a 3.5mm jack!!! Sown on travelers clip for hooking onto any luggage on the go!!! Requires 2 AA batteries (not included)