My first pair were defective but the seller replaced them quickly and I've had no problems with daily use for 2 months. I was looking for loud volume and they will sound as loud as anyone should be able to handle. About three times louder than any other wireless headphones on the market. After replacing the included earbuds, I easily wear them for 3 hours before they become annoying. I haven't had any fit issues either, like my Blon 03s. The bass is less pronounced than expected, but other than that I'm very happy with the sound quality. I would rate them an 8.5 out of 10 overall. Clarity = 10, Treble = 9, Mid = 9, Bass = 7.5, Loudness = 10. I've had better IEMs in the past, but they didn't come close to this price range. Would buy again.
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