Wireless multi-room audio has never been easier. Just plug an Eos wireless speaker into any wall outlet, inside or out and turn up the volume, thats all. Want to move your music to another place? Easy, just unplug it and plug it in somewhere else, its that easy. The Eos wireless speaker features a removable integrated power supply, so you can hang the speaker from any ordinary wall power outlet or remove the power supply for countertop or bookshelf use. The Eos base station allow you to add up to four wireless speakers anywhere around your home. The rugged design of the Eos wireless stereo speakers makes them perfect for indoor or outdoor use.