Plantronics - Blackwire 5210 - Wired, Single Ear (Monaural) Headset with Boom Mic

Plantronics - Blackwire 5210 - Wired, Single Ear (Monaural) Headset with Boom Mic Part Number: 207577-01 Color: Black Wireless Type: IR Headphone Frequency Response: 20Hz-20KHz Headphone Sensitivity: 118dB S.P.L. at 1KHz Weight: 0.28 lb. Microphone Frequency Response: 100Hz-8KHz Features: Ideal for all-day use, long conference calls and listening to multimedia Noise canceling microphone masks nearby talkers for maximum call privacy Variants include universal USB or USB-C Connectivity to smartphone and tablet via 3.5 mm One-touch call answer/end, volume +/- and mute PC wideband audio with noise-canceling microphones for high-quality PC telephony Plantronics Manager Pro, an