Visit Amazon sites : http://www.amazon.com/gp/product/B0041SWR62?tag=gallianostore-20

TIC WRS005SL 5-Inch Wireless Indoor/Outdoor Rock Speaker - Slate

8-channel auto lock broadcast transmitter range is up to 300 feet unobstructed and the remote control works up to 80 feet
Speaker is powered by either 6-AA batteries or 9V power adapter
Sealed cabinetry