3.5MM bluetooth audio receiver can make your speakers wireless by pairing bluetooth cell phones or bluetooth computers. * Support earphone, Home Theater System and the items that have amplifier function, such as SD USB Speaker with , MP3, MP4, MP5 TV set. All of them should have external speaker and 3.5mm connector. * It can reach 10 meters wireless distance in the place where there is no strong obstacle and wireless interference. If the place has interference, it can reach 3-8 meters distance. * With a 3.5 MM female to female connector