This bluetooth is designed for Bose Sound Dock 10,Digital II,JBL,SONY,LOGITECH,PHILIPS,YAMAHA speakers which has 30pin dock adapters
and can charge your iPod,iPhones.
When you plug our bluetooth into 30pin dock adapter,pls pair bluetooth with your iPod,iPhone or Samsung,HTC phone,etc which has bluetooth function.
Then you can play music through phone and sound comes from Speakers.
The distance can be more than 30ft and can be used in different rooms.