These are admittedly my first true wireless headphones, so keep that in mind. I had no issues with battery life; I charge them every day I use them and I never run out of charge. The sound quality is what you would probably expect from $40 headphones. That's good, but not for writing a pour-out Shakespearean sonnet. The volume could be a bit louder, but doable in most cases - I work in a bar, and they suit me in that department. The voice quality isn't that bad either. I don't have much experience calling with them, but there were no complaints when I did like some other budget headsets. However, what drove me crazy was that I had a hard time taking them. Enter and exit Mono/Stereo mode. Since you can only use one earbud at a time, this increases battery life, but it took 20 minutes to switch modes. I really wish this part was easier.
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