1. Speaker size: 50mm
2. Impedance: 15ohm+-15%
3. Sensitivity: 102+-3db
4. Frequency range: 20Hz-20KHz
5. Microphone size: 6.0x5.0mm
6. Microphone sensitivity: -38+-3dB
7. Microphone impedance: about 2.2Kohm
8. Directionality: omnidirectional
9. Cable length: about 2.0 meters
10. LED working voltage: DC 5V
11. Working current: about 180mA,
12. Headphone jack: USB+3.5mm
13. Product size: 17.5 x 9.5 x 21cm
14. Product weight: 317g