The WeSC Banjo Headphones fit nicely over your ear to help you enjoy your tunes and block out annoying outside sounds. Sounds like crying babies, whiny co-workers, or your elderly neighbor"s dial-up internet connection. Product FeaturesMaterial: vinyl, nylon, alloyDriver: 40 mmFrequency Response: 20-20,000 kHzInput Connection: [3.5 mm]Cord Length: 39 in, (extension cord) 12 inWeight: Recommended Use: not rollerbladingManufacturer Warranty: 1 year