EMPIRE Black Silicone Skin Case Cover + 3.5mm Male to Male Stereo Auxiliary Cable for Samsung Galaxy S II I9100 Durable, soft silicone material. Custom made to fit your phone perfectly. Plug in your charger, cable, or headset without removing the case. Listen to music on any stereo that features a 3.5mm aux input port. Great way to hook up your phone/iPod to your cars stereo.