... Speaker 1)Mini speaker for iPod,Iphone,MP4 2)360degree surround sound 3)FCC,CE,ROHS 4)Print your logo Portable Vibration ... Capacity:400mah• Working time about 10hours(medium volume,randonm music)• Audio Source:PC,MP3,MP4,MD,CD,DVD player,Mobile phone ... ,etc • Mini Speaker*1• USB Cable with 3.5mm Audio Jack*1• User Guide*1• USB Power Adapter*1(optional)