Takes your movies, music and entertainment to a whole new level. With a built-in rechargeable battery helping to power up the amplified subwoofers in each ear cup that improves vocals, and provides a deeper bass. Experience a fuller, cleaner theater sound that you can feel. Also comes with a cushioned headband for last lasting comfort.Takes your movies, music and entertainment to a whole new level. With a built-in rechargeable battery helping to power up the amplified subwoofers in each ear cup that improves vocals, and provides a deeper bass. Experience a fuller, cleaner theater sound that you can feel. Also comes with a cushioned headband for last lasting comfort.