Model:HT-303 Computer headset description:Headset design, rugged stainless steel bars, adjustable.Single-wire binaural designFull-size leatherette and foam ear cushionElectroplating ornaments combination, prominence fashion personalitySkin earmuffs, wear comfortableIt is equipped with noise cancellation rotation microphone, provided the best sound clarity  Headphone:1.Driver Units:Φ40mm2.Frequency Range: 20-20,000Hz
3..Impedance: 32 Ohm4.Max input power: 100mW5.Sensitivity: 115 dB( at 1KHz, 1mW)6.Plugging: 3.5mm stereo7.Length of cable: about 2.4m 

Microphone:1.Driver Units:Φ6*5mm2.Frequency Range: 16-20,000Hz
3.Impedance: 22K Ohm4.Max input power: 0.4mW5.Sensitivity: -58dB 0dB=1V/Pa at 1KHz6.Plugging: 3.5mm