The speaker comes with a racetrack-shaped driver, separate tweeter and dual passive radiators for impressive audio clarity and a deep bass, offering listene Original Pro Sound in a durable design. With 20 hours of playtime and a built-in power bank, listeners can easily charge devices through the speaker’s charging port without ever interrupting their tunes. Enabled with Party Boost, users can connect the Charge 4 to other compatible JBL portable speakers to amplify their sound.