good bluetooth speakers/boxes for the note2

hi i´m a happy owner of the note2,, and well, would like to get some bluetooth speakers for my phone, they need to have a battery, that last for about 6 h or longer, and in the perfect scenario you´ll be able to have more than one, and they would be able to work together, like the philips sb7300, but not as expensive, i think that for what it is it´s way too expensive.

any idea?

50 each would be great.