China Gtnkn Monaural Wireless Call Center Headphone Bluetooth Handfree Noise Cancelling Headset, Find details and Price about China Earphone, Wireless Headphone from Gtnkn Monaural Wireless Call Center Headphone Bluetooth Handfree Noise Cancelling Headset
Speaker diameter: | 50mm |
Impedance: | 32ohm±15% |
Sensitivity: | 114dB±3dB |
Frequency: | 20-20000Hz |
Mic sensitivity: | -36dB +/- 1dB |
Mic impedance: | 2.2kohm |
Directivity: | Omni-directional |
LED working voltage: | DC5V +/- 5% |
Working current: | Below 100mA |
Headset interface: | USB (plug the USB connector, LED light is on, unplug for off) + 3.5mm stereo audio and mic plug |