Great sound for such a small speaker. I use it mostly with my iPad2; the Bluetooth set-up took about 4 seconds and works perfectly. I don’t usually get more than about 2.5 hours of playing time per battery charge, but for what I use it for–around the house, on the porch while swimming in the pool–this is enough. I like that the buttons on the bottom do double-duty: they can adjust the volume or advance the current song to the next one (I use it with Pandora a lot and the button on the speaker will skip the song that’s playing for you, which is great). It won’t do the job of a big sound bar speaker, but if you’re looking for a small, portable way to greatly amplify the sound that your phone or tablet delivers, I can recommend it.