Logitech M187 Wireless Ultra Portable Pocket-Ready, extra-small design-White(910-005380)
$15
-Microphone Type: Bi-directional
-Input Impedance: 20 Ohms
-Sensitivity (headphone): 115 dB +/-3 dB
-Sensitivity (microphone): -42 dBV/Pa +/- 3 dB
-Frequency response (Headset): 20 Hz - 20 KHz
-Frequency response (Microphone): 100 Hz - 16 KHz
-Packages: USB Computer Headset
$15
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$55
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$90