Take clear crisp high quality sound no matter where you are with these ear buds in a circular plastic case. These convenient promos are most suitable for a myriad of advertising events and occasions. They work with most audio devices and come in a comfortable and compact travel size that's wonderful for anyone on the go. The case measures roughly 2" in diameter and the cord is 48". Add your custom logo to complete the look! An excellent thing to show off at your awesome trade shows!