These lightweight comfortable headphones come with 3 sizes of earbuds, so that you can find the perfect fit. The frequency response of 8-22, 000 Hz will provide a full sound with a good bass. Specifications CLOSED TYPE: Yes DRIVER UNIT:9 mm dynamic DYNAMIC TYPE: Yes MAGNET: Neodymium CAPACITY:100m W IMPEDANCE (OHM):16 ohm (1 K Hz) DIAPHRAGM:PET FREQUENCY RESPONSE:8â22, 000 Hz SENSITIVITIES (DB/MW):100 d B/m W 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 x 2, M x 2, L x 2 sizes)