These mics work very well. They transmit quite well with no background noise. The earbud fits well and comes with a spare earbud. They don't have VOX, but the ad didn't say so, just pointed it out to potential buyers. You can speak into it very softly and the receiving device will hear you, but absolute whispers are difficult to understand. Basically, if you want Tear of the Sun systems you're buying an expensive setup, but if you just want something that works within reason, this is a great way to get it done cheaply.
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