I bought two and they sound nice, but one has a static sound, when nothing is being played. Also, they are not easy to pair, at all and do not stay paired. That is the main reason that I upgraded, from the first Boom jackets, to these. I contacted Altec Lansing support and even gave them video evidence, but they still have not replied, with a solution, after weeks. I don't think they care about helping customers. After getting lucky, on pairing the two, they both play, but if you move one, not too far away, they become unpaired. The distance that I moved them apart from each other was well within the working distance. I was told, by support, to let the batteries run down all the way, recharge them and then they should stay paired, when moving them apart. I still have problems, with them. Maybe, after the batteries die, again, they will get even better. I don't know. Though, it will take a while for me to find out, because the batteries seem to last a very long time. Also, at one point, out of nowhere, I heard one speaker start to make a buzzing noise. I had to turn it off and pair it up, again. If you do want the Boom jackets, just get one and you will have 50% of the problem or, hopefully, get lucky and have no problems. They are rugged looking. I don't know how well they do, in the water, though. Fix the pairing issues, the static sound, and the random bussing noise and they get five stars. Giving two stars is beig generous. I could give one, by itself, four or five stars, maybe, but the pairing feature means that if they don't work together, they don't work 100%, correctly. It's almost summer and I want to get out and use them, TOGETHER. Right now, they defeat their own purpose.