2.0 stereo retratable computer headset

2.0 Stereo USB headphone

1.Plug Model : USB
2.Speaker diameter: 40mm              
3.Speaker Impedance: 32Ω                
4.Speaker Frequency response: 20Hz - 20KHz      
5.Speaker Sensitivity: 110dB           
6.Noise Level: ≤-78dBA
7.Dynamic range: ≥78 dBA
8.THD: ≤0.1%
9.Stereo crosstalk: ≤-52 dBA
10.Microphone Specification:6*5mm                  
11.Microphone Sensitivity : -58dB               
12.Microphone Directivity:   Omni directional
13.Microphone Impedance: ≤2.2KΩ            
14.Microphone Frequency response : 50Hz - 15KHz
15.Headphones Wire Length:2.2M          
 Features  : Can match a PC, wire control device,the button control horn volume and light touch microphone mute button. Support the mainstream operating system, microphone, horn bass voice clear strong.