These lightweight comfortable headphones come with 3 sizes of earbuds, so that you can find the perfect fit.The frequency response of 8-22,000Hz will provide a full sound with a good bass. Specifications CLOSED TYPE:Yes DRIVER UNIT:9 mm dynamic DYNAMIC TYPE:Yes MAGNET:Neodymium CAPACITY:100mW IMPEDANCE (OHM):16 ohm (1KHz) DIAPHRAGM:PET FREQUENCY RESPONSE:8–22,000Hz SENSITIVITIES (DB/MW):100 dB/mW CORD TYPE:Y-type CORD LENGTH:1.2 m PLUG:Gold-plated L-shaped four-conductor stereo mini WEARING STYLE:Closed earbuds Weight:3g Included Earbuds (S x2, M x2, L x2 sizes)