Most sound-limiting headphones aren’t exactly engineered to deliver a great sound experience. Not true for Skullcandy Cassette Junior. We apply the same premium sound engineering, testing and quality standards to Cassette Junior as all Skullcandy headphones. Then we simply limit the volume to prevent over-exposure to higher sound levels. Headphone Features Audio Drivers: 40 mm Frequency Response: 20 - 20,000 Hz Cable Type: Round Microphone: Yes Adjustable Headband: Yes