The Crew Earpiece is designed with comfort in mind for long hours at work; you will forget that you are wearing it. The earpiece is external, fits over the ear and is made of a lightweight-durable material. This versatile earpiece can be worn on either ear as the ear bud swivels. The cord is 18" and coiled. The connector is 2.5 mm and is most commonly used with Kenwood brand shoulder microphones.