I bought these for a family member who has a tendency to break expensive electronics and I tested them myself before giving them away as I wanted to make sure they worked. They fit well, are properly sealed, the case looks a bit cheap but seems to work well, and the sound quality is clearer than what you'd expect from $25 TWS headphones. In addition, they perfectly matched my phone, TV and laptop. They didn't crash or lose sync when I tested them with different media on all of these devices. They don't sound as good as my $100 wired IEMs, but they sound good to most people. I will say one thing, the sound quality is at its weakest when playing electronic music. The highs of electronic music seem to push the GT3 to its limits, and it's clear that the highs are the GT3's weakest point. However, unless you listen to electronic music, you probably won't notice, but I did, which is why I'm giving them a 4 instead of a 5. Edit: The right earbud has lost connection for the person use them. Let's go back to something more advanced with the Qualcomm 5.2 chipset as it seems to work for most people.
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