We have one of the radio speakers in the bathroom and hang the other box are as a mobile device in the hallway, because it can be made from there if necessary on the balcony or in other rooms. We are thrilled by the sound quality and the design. We have the boxes pass through a Smart TV, so we so Internet radio among other things can receive. The boxes can be powered by electricity or batteries. Although a box requires six batteries, but these hold at moderate volume pretty long. The total assembly is easy. We can recommend this wireless speaker with a clear conscience, because they are great for our purposes, and fully meet the specification.