lanmu charging cable compatible with bose frames alto/rondo/tenor /soprano audio sunglasses, replacement magnetic usb cable (12 inch) lanmu <b>specification:</b></br> color: black</br> length:12in</br> material: copper & abs</br> connected type: 4-pin magnetic head to usb</br></br> <b>compatibility:</b></br> bose frames alto s/m</br> bose frames alto m/l</br> bose frames rondo</br></br> <b>in the box:</b></br> (1) replacement cable</br> (1) user manual</br>