The P9 is ideal for listeners on the go looking for a great sound with street-smart style. Equipped with dynamic elements, the P9 delivers an extended frequency response from 40-20,000 Hz. The side-firing design turns the elements to direct sound straight into the ear canal, delivering improved bass performance to get the most out of pop, rock, and rap music. The P9 features a sleek, simple design. Weighing about one-half ounce and barely touching the ear, the P9 is so lightweight and comfortable you can scarcely feel it on even after hours of listening.