Meze 11 Classics W/ Mic and Pouch -Frequency response: 18Hz - 22KHz ~ -Sensitivity:110+/-3dB at 1KHz,1mW. -Impedance: 32 Ohm ~ -R&L balance:&lt;3dB(50Hz-6KHz,1mW) -Dedicated 40mm Neodymium drivers ~ Passive noise isolation -weight: 90g -Detachable TPE cable ~ -Plug:3.5mm gold-plated