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Review Summary
2020-04-13T20:00:00
I have been using this headset for several years for conference calls while working remote. I have yet to find a device that matches the quality of the microphone you get with the blackwire. The other callers will appreciate the clarity of your voice, and co workers are always asking what I am using and how it is so clear. You can work in loud spaces and the background is silent (i have taken calls in food courts, busy offices, outdoors, cars, etc. The mic removes any room echo as well. All around amazing. Downside is that after long calls, it can become uncomfortable for me. Because of this, and the recent work from home requirements, I have been on the hunt for a home office mic/speaker replacement. I have tried half a dozen alternatives that are just clearly worse sounding when I used the blackwire as a baseline. I really want to get my hands on the Calisto 5200 to do a comparison and see if it is better than the major similar competitor devices. TLDR - amazing headset that can be uncomfortable several hours of use.
frank79430

2019-12-20T19:00:00
Excellent product that is small and perfect for conference calls. Love it!!! The calls are clear on both ends and I would would it again.
Pinzack

2019-07-06T20:00:00
Use it for a while, voice is very clear, don't have to mute when someone is running lawn mover near to my window, my team member telling me they can hear only my voice but not any noise, so highly recommend it..
Magelan913

2018-05-15T20:00:00
I use these when I travel while on work PC and for connecting to CISCO phones using USB connection. Good sound in both ears. The pros: - Lightweight - Made for travel with carrying case - Excellent sound quality both on voice and mic The cons: - The plastic ear pieces that hook around the ear come in one size and can be annoying. They can remind you that they are there. Needs some kind of cushion
Craig M.

The Plantronics Blackwire C435 is computer specified headset which perfectly combines the style, sound quality and flexibility and connects the computer via the USB interface. Noise-canceling microphone reduces background noise interruptions and wideband delivers heightened speech clarity, providing the best possible PC audio quality. Enhanced Digital Signal Processing (DSP) provides more natural sounding voice. A dynamic EQ feature optimizes your voice quality when on calls and automatically adjusts the EQ settings when you're listening to music or want high quality sound for multi-media playback.