... alkali environment of PVC material, suitable for consumer habits, prolong the using time, High fidelity design anti-interference ability, Signal ... MP3, DVD, CD, television, radio, computer and amplifier, the connection between the speakers and transmission of their audio signal.Method of use ... 3.5 mm stereo headset, export or on the other end of the plug into the input device of 3.5 mm stereo socket ...