With the white Carpoint Smartphone hands-free earplugs you can make hands-free calls in the car, on your bike or while walking. With the built-in microphone in the cord you are always clearly audible. The cord is made of flat anti-tangle cable, which makes the cord less likely to get tangled because the wire only turns to one side. In addition, you can listen to your favorite music with the Carpoint earplugs. The earplugs provide a dynamic sound and have a frequency range of 20-20,000 Hz. The plug & play function ensures that you only have to plug the universal 3.5 millimeter jack plug into the headphone output on the smartphone, laptop or tablet. The cord has a length of 120cm.