The KEFINE Klean earphones are professional IEM type earphones. The earphones have only been used for two days and are still new and clean with all their accessories. The sound quality of the earphones is very high, pure, and loud, with excellent details. Human voices are clear and pure, not muffled like most earphones. The earphones are made of high-quality metal and feel substantial. The cable is durable and strong. The earphones come with two types of nozzle filters that you can change to alter the sound to your liking, and they also come with a case for storage.