1) stereo and stable sound;
2) sample available;
3) on-time delivery.

1,Plug Model : USB
2,Speaker/Vibration diameter :  40/30mm              
3,Speaker/ibration Impedance :32/8Ω                
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,phone Specification 6*5mm                  
11,phone Sensitivity : -58dB               
12,phone Directivity : mini directional
13,phone Impedance ≤2.2KΩ            
14,phones Frequency response : 50Hz - 15KHz
15,phone Wire Length:2.2M