With today's world revolving so much around mobile devices, this 3.5mm M/M Speaker/Headset Cable is an essential tool to have at all times. Works with smartphones, tablets, MP3 players, laptops, and other portable audio devices with a 3.5mm audio jack. Simply connect one end of the cable to your mobile device's headphone jack, and the other to the AUX input of your car stereo, portable speaker, or other compatible device. Whether you use it when you're on the road, or in the comfort of your home, you'll always be able to listen to your favorite tunes.