JVC HARX500 HA-RX500 Over-the-Ear Full-Size Headphones • 40 mm neodymium driver;• Frequency response: 10 Hz to 22 kHz;• Nominal impedance: 70 ohms;• Ear-direct structure with inclined unit for powerful sound;• Twist-action structure for more comfort during prolonged use;• Comfortable, cushioned headband;• 11.48 ft. cord with gold-plated plug;• Includes 3.5 mm to 1/4 in. adapter;