30pin portable wireless bluetooth music receiver dock audio adapter stereo a2dp for bose sounddock speaker boombox just plug range:30 feet(10m) how to use: 1.Plug this bluetooth receiver into the 30pin dock speaker,it will automatically enter in pairing mode. 2.At this time,you can turn on your bluetooth device to search for receiver and pair it. 3.When receiver is detected,enter the pin '0000' and confirm. 4.After successful paring,select receiver from bluetooth device list and press 'connect'. 5.After successful connecting,the indicator light of receiver will be blue flashing slowly. Note: complies with analog audio speaker dock only(includes bose series, philip series, sound muse series, ihome series, times the music series, doss series, jbl, yamaha's tsx-130, etc.) 6. It is a stereo bluetooth receiver