This is the best portable speaker I've used. http://minirigs.co.uk/ Great battery life and pretty loud with good bass for a portable.
It's 3.5mm input but at times I plug in one of these http://reviews.cnet.com/headsets/samsung-hs3000-bluetooth-headset/4505-13831_7-34846087.html to make it bluetooth (plus a dual ended 3.5mm jack so there's no cables).
@aggi started
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This is the best portable speaker I've used. http://minirigs.co.uk/ Great battery life and pretty loud with good bass for a portable.
It's 3.5mm input but at times I plug in one of these http://reviews.cnet.com/headsets/samsung-hs3000-bluetooth-headset/4505-13831_7-34846087.html to make it bluetooth (plus a dual ended 3.5mm jack so there's no cables).