I bought these as a test to see if I would like the style and fit before dropping $80 or more on a good pair. Connection is awesome, regular earbuds don't connect for me from the interference in my environment, these are a solid connection that hasn't failed or dropped out once. They are more comfortable that I would have thought. The battery life is great, like in excess of 8 hours for me. The volume could be a little more as they seem underpowered sometimes. There have been a couple of times that I wished I could turn them up a little more but they were already all the way up. With BASN iem's the sound is fine with no buzzing or hissing in the background. For my purposes I can't justify buying a more expensive pair just for the louder volume. It wasn't like it wasn't loud enough to hear, just wanted a bit more. After more than a dozen pairs of wireless earbuds($30~$120) that wouldn't keep a connection more than 5 seconds without dropping signal these are the best listening experience I've had. Way better than expected.

Overall, I still love these things and I won't be returning them. They would be perfect, especially for the price, if not for the connection issues. Besides that, they are perfect budget wireless earbuds when paired with my KZ ZSN Pro. I'm willing to put up with annoyance of having to fiddle with the connection every time, but your mileage may vary.

I compare these to my current favorite "everyday wear" earbuds, which are the Bose SoundSport, and they compare very favorably, even winning in some categories.

Pros:
- The sound is great. I feel that they get the most out of my KZ ZSN Pros.
- They look great. By that I mean that they're inoffensive and unobtrusive. That's all I ask for, and that's all I get. They're very unobtrusive, a lot easier to wear than my favorites. They're also a lot harder to lose than the tiny in-ear things that you get from Apple, Google, etc. I was tired of spending $100+ just to lose one a week later.
- They're very comfortable. I'm quite sensitive to this, and I consider most earbuds quite irritating. These I can wear comfortably as long as the battery lasts.

Neutral:
- The battery life is descent. I haven't timed it, but it seems to be better than Bose earbuds. Don't expect miracles from such small devices, but I would say competitive.
- Unable to connect to multiple devices, but very few of these really excel at this, so I won't take any points off for that. Only Bose actually does it right in my experience.

Cons:
- Initial connection is annoying. I mostly use these with Windows, and I always have to go to the Bluetooth settings, disconnect, and reconnect before they start working.
- Sometimes when I bump my left earbud, it stops working. I have to power cycle the device and re-connect when that happens.

i love these, i just can't stand the pre-programmed voice. luckily the audio is really good (mostly due in part to the actual earbuds). the case is a little large, but workable. overall, decent. hate the voice

Very good quality and good charging system

I bought these to make my KZ ZSN Pro's Bluetooth compatible. Swapping them out for the cable was incredibly easy, and they paired up with my phone just as easily as any other Bluetooth buds. As far as I've used them, the battery life is as advertised (although that being said, still quite short at only 6 hours), and the sound quality is just as good as if I were using a cable.

Although they aren't terribly uncomfortable, I find that the cable pinches the upper part of my ear (where they wrap around), and the skin becomes irritated after wearing these for a few hours. They also aren't super fun to wear with glasses (which I wear) because of the limited real estate in that specific area of your head.

The biggest gripe I have with these, however, is how the case feels. You use the case to charge the buds, to bring them places, and to keep them safe from the elements. This case feels incredibly cheap and I'm very concerned that the hinge on the lid will break. The lid itself feels very thin and has already been quite severely scratched after sharing a pocket with just my keys. The lid closes quite securely with magnets, but when open it likes to fall shut because there's nothing holding it open. It opens up 90 degrees, which is perfectly fine to get the buds in and out.

Overall, I love the idea, and the execution is maybe 90% of the way there. It is a literally cheap package though, I can't complain too much about the quality of the materials used, but yeah. A bit disappointed in the case, but the product itself works as advertised.