IDANCE Thick Padded Over Ear Headphones for iPod/iPad/iPhone, 15Hz-20KHz Frequency, 32Ohms Impedance, 3.5mm Plug, Yellow/Black Tightly sealed acoustic design for a high level of sound isolation and booming bass sound Ultra-thick pressure-relieving earpads cushion your ears for unbeatable, supreme comfort Driver Unit - 40mm Driver Type - Neodymium Impedance - 32