German Maestro GMP 8.35 D Monitor/Mobile Headphones - housing made of special extremely durable PE material - nearly indestructible, synthetic lether ear pads, closed-back, over-ear design, 35 Ohms impedance, frequency range: 20 - 27000, sensitivity: 101 dB, maximum input power 100 mW, two-sided cable run, 3m coiled-cable with strain relief on the ear-cup, 3,5 mm right-angled/gold plated plug and 6,3 mm adapter, weight 337g with cable, 256g without cable