Works with any portable device that has 3.5mm audio jack, for your Car /Home Stereo; Completely eliminating the buzzing noise, caused by ground loop which happens when the audio source; Compact and portable ,easy to carry; You can enjoy the clean and clear music/audio by eliminating the current noise in some car speakers; Car stereo noise filter is a simple way to eliminate problematic noise; Colour:black Material:Metal Package Contents: 1 x Audio Noise Filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.