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Gear4 BlackBox Mini - Portable Bluetooth Speaker - Gear4 BlackBox Mini
It looks pretty good too, all done out in glossy black plastic, and with a set of three glowing touch-sensitive buttons (these let you adjust the volume, turn the speaker on and off and pause the music) on the top to cap it all off, it looks pretty swish. The speaker drivers are mounted in each end and, unusually, fire sideways through a pair of black grilles. These are solid enough to protect the drivers from accidental in-bag damage and yet just transparent enough that you can see the silver cones through them if you happen to take a look. Very bling, bling.
The second reason is that the Mini has been extremely well thought out. You can, of course, connect to it via Bluetooth for use with any A2DP Bluetooth-equipped mobile phone or MP3 player - that's its main raison d'être, and it's brilliantly easy to setup this way - and you can also hook up to it via a 3.5mm audio input on the rear if you want to use it with a mate's standard MP3 player.
The way the speakers get their power is just as flexible, too. You can simply stick four AA batteries in - which is how most people will probably choose to use it - or power it via the mini-USB socket on its rear. There's also a 'wall-wart' power adaptor supplied in the box, but you can just as easily hook it up to a spare laptop or desktop PC socket for music while you work.