These are the speakers used by businesses to let you hear a tv in a bar, eating place, anyplace that has tv. They are wireless and be placed anywhere. All speakers charge up and will play for 12 hrs. Put them in multi rooms of a business. This set cost 7500.00. I bought them in an auction. The charging stands are worth 300.00 each. I looked up the speakers and they were well over 100.00 each. The control box was around 2700.00 these would be great for bar or eating place. It all looks like new. If you are a business owner and you are looking for wireless speakers, this is a deal for you.send me email address and I'll send pics.