We purchased these to use outside on our deck. I cannot tell you how very happy and surprised we were with the outstanding sound and clarity that these produce. They have different settings, that allow you adjust the bass, tone and volume. You can either plug them in or insert batteries.
The really nice part about these, is that the transmitter, that comes with this unit can be used with any audio media. Example, it can be used with computers, laptops, ipods, stereos, portable radios, and televisions. The only thing they need to have, is a headphone jack!
We stream from out favorite out of state radio stations, from Cable Music Channels and our ipods, all the time.
All that's needed in setup is to plug into an outlet and then into a headphone jack and Volia! You have stereo sound, outdoors.
Others reviewers commented on static, and we have not experienced any at all.
We loved them so much we have purchased them as gifts and bought another one for ourselves, so that we had a pair.
They are weatherproof and have proven to be so.
I highly recommend these to anyone!