I have bought both JOUNIVO JV603PRO and JV605. My application is for professional applications with Microsoft "Teams" and Zoom meetings for large companies. I really like the design of both. They are well built and fairly durable. They were both easily recognized by the few computers I tested them on. Unfortunately, both had low noise levels. This hissing may not be easily noticeable on small computer speakers when using Teams or Zoom, but it was clearly visible when I recorded the test in Audacity and listened to the playback through headphones. For my purposes they were unacceptable. They may be fine for the "average" consumer, but my earnings depend on EVERYTHING working properly. I got them both back!
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