Amazing bit of kit. Very punchy for its size. Bluetooth pairing works well with Lumia 920 and IPhone 5s. I can also stream music from my Surface. Oh, and when I get a call, it works as a conference call "thingy".
Very impressed of how loud such a small speaker can be. Sound quality is very good and clear. Extremely portable, can be arranged both horizontally and vertically. I am using it indoors and outdoors, works perfectly with iphone 3GS and 4S. Only reason for not giving 5 stars is that the battery doesn't seem to last 5 hours as stated by the manufacturer. Otherwise I highly recommend this portable speaker.