Type: Headphone Driver Unit: 50mm diameter dynamic moving coil driver Frequency Response: 19Hz-20KHz Cord Length: 4.3 ft. Features: Right-angled, gold-plated connector designed to fit with a variety of device cases and create a high-quality connection for sound Recyclable aluminum ring that’s high quality, adds to durability and keeps materials out of the waste stream Fabric cord helps reduce tangles and is specially engineered to cut down on static so you get that clear sound