I always had a thing for headphones, wondering if they have a quality sound with balanced treble and bass. Usually, I would waste my money and end up disappointed.
I have never bought anything like this before.
Sweet, deep, intense sound without distortions or tremors in the bass or screeching in the treble,
with very good sound isolation, such a sound uplifts your mood. They don't fall out of your ears and the packaging includes two extra rubber tips.
Instead of buying non-quality headphones for 30 euros, you should get these and be done with it.
In terms of appearance, I haven't seen anything more beautiful, almost alien-like, a jewel! You forget that it has a battery.

Negatively, although the case is very nice, it requires a bit of nail to open and it slips. Also, at some point, I brought them close to the case while using the ambient sound feature and they started whistling, maybe there was interference with the magnet, luckily I wasn't wearing them.

Regardless, they are worth it and I have no regrets at all.

Edit: It has a battery indicator for the case. There is a red light on the back next to the charging port. 3 blinks for full charge, 2 for medium, and 1 for low charge.

3-month update: These headphones are really great. They have a long battery life and I use them every day. The ANC works exceptionally well, although in rare cases (e.g. strong wind) it doesn't cover all the sounds. I won't take back what I said because it's true. However, I will add two more things. Whenever I receive a phone call, no matter what mode I'm in, it automatically switches to Noise Reduction for the duration of the call. In very rare cases, my conversation partner has complained that they can't hear me well, but those times were when there was wind and I was outside. The Edifier app is frequently updated and the controls it has are particularly useful for adjusting the sensitivity of the touch button on the headphones and other features. I have them paired with my phone and computer, and they work perfectly on both (they can't be connected/activated simultaneously on both). When running, they stay in place and any neck strap only adds weight to them.

Even with the "negatives" I mentioned below, I still believe they are an excellent choice and I have no regrets about the money I spent. Especially if someone finds them for the 60 euros they used to be. Lastly, they are beautiful. Many times when I see them on the table, I admire them; the case looks like a pebble.

I've had the headphones for about a week. It's the first time I've bought something in this price range, so I can't compare them to similar ones. Previously, I had Bluetooth headphones for up to 25 euros. Compared to those, these are superior in almost everything. Let's start from the beginning.

Positives:
+ Beautiful and elegant design
+ Clear sound with the ability to modify it through the equalizer without losing quality
+ The box includes rubber covers in small and large sizes, while the medium ones are already on the headphones
+ It has an extra pouch as a case
+ The weight of the headphones is light
+ They stay in place while running
+ Due to their weight and design, they didn't bother me at all even when wearing them for over an hour (including during sports activities)
+ They connect very quickly to the phone, as well as other devices
+ The Edifier app allows for some extra settings regarding sensitivity and ambient mode
+ The case charges with a type C cable
+ Due to the design, they have excellent passive noise cancellation. Depending on your environment, even the normal mode is sufficient.
+ The ANC (Noise Cancellation) works very well. I was walking on the street, someone passed by talking, and I understood them because I saw their lips moving. However, friendly advice, choose the right mode depending on your surroundings to avoid any danger on the road.
+ Even with ANC on, the sound is natural, without any strange processing.
+ There are controls for changing modes, play/pause/next track, game mode on/off, answering and ending calls. The response of the headphones to touch is immediate, as long as the instructions are followed correctly.
+ The app includes a manual in case you need to find something quickly
+ There is a widget, but it also appears in the notification bar for quick settings and battery percentage
+ Excellent battery life. After 1 hour of listening to music, talking on the phone, and changing modes (so take into account the touch on the headphones), the battery dropped to about 10% (I started from home with 100%, without the case, and returned with 89-90%).

As for the "negatives," I am a bit divided because they are small details and not something serious that would make me say that the purchase is not worth it. Here are the things I noticed:
- While the headphones have an indication of the battery percentage through the app, the same prediction does not exist for the case.
- Someone mentioned sounds like air. This is true, and I noticed it at very low volume and when there was an equalizer. Generally, the sound is very clear and at a normal volume, especially with ANC, it is enjoyable. Now, for the low volumes, if you notice it in a quiet environment, it's okay, but if I hadn't read about it, I don't know to what extent I would have noticed it.
- The app sometimes freezes, but it does not hinder the proper functioning of the headphones.
- As soon as they are turned on, ANC is the default mode, regardless of the last mode used.
- I believe that the price could have been better. In the price evolution, I saw prices as low as 60-65 euros, but during the period I was searching, I did not find anything below 80.

Overall, they are decent. I did not mention anything about durability because I believe that in one week, you cannot know much. I will come back at some point regarding this matter. I do not regret the purchase; on the contrary, I use them every day, either with my phone or with my computer. -1 star for what could be considered negatives by me.

The sound quality during calls ranges from "good" to "poor". For some reason, even when using only one of the two earphones, the Active Noise Reduction is activated and there seems to be an issue with how it manages sound during calls.

The microphone quality is average, and when the user wears a mask, they have to raise their voice quite a bit to be heard.

During music playback, it is excellent. The sound is satisfactorily detailed, with powerful bass that can be heard even in noisy environments when the Active Noise Reduction is enabled.

The "transparent" mode (when the earphones reproduce ambient sounds) is mediocre at best. There is a constant hissing sound (possibly due to poor microphones) and the transparency function is not very effective.

The application is a disgrace. It barely works, and when it does, it is frustratingly slow to start. However, it does offer all the basic settings needed for such a pair of earphones.

Considering the ANR feature and the good sound quality (for multimedia), I believe the price is at the limit of "good".

Truly amazing, especially for the 60~70 euros that I bought them for. Their sound is amazing, although it has quite a lot of bass (without reducing the high frequencies). Their battery is very good, and I was impressed with how well-made they are, you can really feel the quality. They have a mobile application, which I would have liked to have an equalizer, but overall it is very user-friendly, it gives you various settings for the headphones, shows you their battery level, and finally allows you to switch between ANC, Ambient Noise, and Normal modes. And in terms of ANC & Ambient Noise, they impressed me. The ANC handles fans, air conditioners, etc. very well, and the Ambient Noise, although it has a lot of white noise, you can actually hear the surrounding environment with great clarity, for example, if someone is talking to you or if you are walking on the street, etc. Overall, for the money I got them, they are one of the most value-for-money true wireless headphones, they are worth it. I highly recommend them.

Edit: Still amazing, I just want to add that for anyone who wants a flat sound without excessive bass, etc. for more detail, now through the Wavelet application on the Play Store, there is an EQ Preset that makes them completely flat. Just download the application, and with the headphones connected, search for the EQ preset for the Earfun Air Pro (the sibling headphones to these, just under a different name, as a collaboration between the two companies. Edifier made the sound and Earfun made the Noise Cancelling). And that way, you will simply have a completely flat sound without exaggerations.

I bought them from abroad at a cheaper price and they are a pleasant surprise... the sound is excellent and the issue is which source to connect them to... on my phone, which has Dolby Atmos, I also have an equalizer so I can adjust the sound to my liking... they are set up with a dynamic 10mm driver with a graphene diaphragm. They only use SBS encoding without ACC... they don't have any Qualcomm optimization chip, yet they manage to perform well in many aspects even without it... the bass, of course, doesn't overpower the mids and highs, although I would prefer something slightly better there, but it's okay. The sound is warm and doesn't tire the ears even after many hours. The active noise cancellation during calls is very good for this category, although it doesn't completely avoid affecting the voice clarity in operation... the amplification of environmental sounds in ambient sound mode is somewhat robotic, but it's nice that it exists... their design is beautiful and different from the rest of the headphones out there. As for the battery, we have information about the headphones, but it's difficult to determine the battery level of the case... the headphones have a large battery, but not the case... nobody knows its capacity... I estimate that if you charge the headphones together with the case, you will get at most one full charge plus another one... not significant. However, there is fast charging. From 30% that I tried, it gave me 70% on the headphones in 10+ minutes (they were buzzing though). The real advantage is the 9 hours of continuous playback that I usually get from one charge without noise cancellation. I tried charging without the headphones, just the case. It charged, I put the headphones for charging, and when it finished, it shortly emitted a sound signal indicating that the case needs charging... so the headphones have a large battery, but not the case... I should also mention the very good latency and the gaming mode that reduces the delay to 80ms... I didn't encounter any serious delay issues in general with videos and movies... their proximity sensor is also very good, as soon as you take off the earbud, the music or movie immediately stops, and when you put it back in your ear, it starts again right away. As for the negatives, the app sometimes takes its own time to connect... and it doesn't offer much except for the environmental sound level. The rest can be done from the headphones... as a package, for the price range of 50-60 euros, it's hard to find something better at the moment... in the future, who knows... overall, I'm very satisfied with the whole package, and I hope Edifier updates the app with EQ modes and also provides control of the sound level from the headphones... the biggest drawback for me... they are also a pair of Earfun Pro, they are from the same company, the same as the NB2 but with an additional charge from the case... they don't have an app though. They are siblings. And something I forgot, the button inside the case that you press to pair with devices... it's a good idea. However, the pair doesn't connect simultaneously to 2 or more devices. You will have to disconnect it first from one by turning off the Bluetooth of that device and have the Bluetooth on the other device turned on in order to connect, assuming you had paired it previously. Now, if it refuses to do so and you need to go through the pairing process from the beginning, it's not surprising... many face the same issue

Well, first of all, I've had them for about 2 weeks, so I can't know about their durability, but they seem to be of good quality material. Personally, I'm not a big fan of Bluetooth headphones (I'm a lover of wired high-quality over-ear headphones), but I got these exclusively for use when I ride my bike, for GPS and some music, answering calls, and for active noise canceling for use in ship engine rooms, and in the end, they didn't disappoint me, but I found them - for Bluetooth headphones - fantastically good headphones worthy of the edifier name. The sound is very high-quality, and as ear cups, they have been tested in environments with relative noise and they seem fine (they will be tested in an engine room during the week and I will come back). Comfort is subjective, of course, but personally, I find them very comfortable and they naturally include all sizes of pads so that one can adjust them to their own ear (I found the one they had on to be comfortable for me).
The battery has very good autonomy, but of course, who wouldn't want a battery to last... ...forever...
What I would obviously like a little better is the quality of their microphone, not that it's bad, but it could be a little louder, although it satisfactorily cuts out environmental sounds.
The application is a bit simple for my taste, but it does what it needs to do.
As for their price, personally, I find them to be a great value for money. They could easily have double the price.
Overall, they seem like a very good purchase.