product description:
1. Material: Plastic
2. Color: black
3. Horn diameter: 50mm
4. Sensitivity: 102±3db
5. Impedance: 30O±15%
6. Frequency range: 20-20000HZ
7. Power: 50mw
8. MIC size: f6.0*2.7mm
9. Microphone sensitivity: -38±3db
10. Microphone impedance: 2.2kO
11. Headphone jack: 37mm