The Sennheiser OCX 686i Sports has been made for a comfortable workout inside the gymnasium. These clip-type earphones provide maximum mobility and comfort. The high output driver units, coupled with the in-ear canal design lock ambient noise out successfully, leaving you isolated only with your workout. The anti-bacterial feature keeps your earphones free from germs and gives you a better and healthier feeling. The sweat and water resistant feature makes these earphones perfect for any workout, because they will stay safe no matter what. The tangle free cables allow for a better and easier music experience.