I use a Jabra Speak 510, very good sound quality, can do much more than just speaker but a little expensive (about 100€)

I use a Jabra Speak 510, very good sound quality, can do much more than just speaker but a little expensive (about 100€)

Edit for details : battery YES, autonomy more thant 10 hours, USB and jack 3.5mm port Size : round, diameter about 10cm for 2.5cm height Link : http://www.jabra.co.uk/business/speakerphones/jabra-speak-series/jabra-speak-510