Update February 2024:
After almost a year and a month, the left earbud (which was used alone for at least 50% of the headphone usage) completely stopped working, while the battery seemed to hold less and less for the past month. Until this happened, I had almost no complaints and was considering buying them again if they lasted for 2 years. The headphones will be sent for inspection as they have a 2-year warranty, like all electronic devices within the EU. The possibility of buying them again still exists, as I was very satisfied with their use, but the duration they lasted (1 year) is something that concerns me. Given the above and the rating of 4.5 stars that I initially gave in my review, I now consider it fair to give them 4 stars instead of 5.
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Update 14/12/2023:
After a year of use, I am completely satisfied with everything and confirm everything I wrote in the initial review. After several falls and wear, the headphones still play like the first day, the battery performance has slightly decreased but remains satisfactory, and overall I have not encountered any problems in calls or music. I consider it one of the best purchases I made this year, as I use them daily for several hours, and if they were to get damaged, I would seriously consider buying them again, as their price remains below €50.
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I have had the headphones for about a month, coming from OnePlus Wireless Bullets Z, which I would describe as very high-quality.
Firstly, I should mention that they are the first Bluetooth headphones without a cable, unlike the previous necklace-style ones I had.
Sound: It is relatively good, but not as good as the previous OnePlus ones. I feel like the mid-range frequencies are missing, as the high frequencies are too intense, and the bass lacks the proper connection between them. Overall, I would say it is average to good. If someone has never had very good headphones, they will definitely find them to be of good quality. (8/10)
Volume: Without many comments, I would say it is good. Especially if you download the company's application, you can unlock the maximum volume, which is quite good and definitely higher than my previous headphones. (9/10)
Microphone: This, I would say, was the major upgrade compared to OnePlus, where the other person often couldn't hear you well, despite the microphone being close to the mouth, and the surrounding noises became very annoying for the speaker. The quality is also superior, and it seems that the sound has a wider range. (9/10)
Battery: I don't have a clear picture yet, but it seems quite good as long as the case is near you and you can leave them to charge for a bit. Overall, I would say I am as satisfied as I was with the OnePlus, which lasted over 15 hours with a full charge. (9/10)
Connectivity: You can connect to two devices simultaneously, and the connection is established as soon as you open the case, in no time. By the time you put them in your ears, they are already connected. The only observation is that if you connect them to a computer and notifications come to your phone, the music momentarily stops due to the notification playing from the phone, and then continues immediately after. Compared to OnePlus, where you had to press a button to switch from one device to another, they are definitely much more user-friendly, and I will never miss a call due to connectivity issues since they connect to two devices simultaneously.
The only downside is the weaker signal where with the previous ones I could listen to music at the other end of the house without interruptions, while with these I have to move 2 meters closer to connect properly. Although they are generally very satisfactory, because of this I will give a lower rating. (8/10)
Noise cancellation: I would say very good for their price category. In an office with a lot of noise and conversations, I can hardly hear anything. On the street, I would say it is dangerous because if you are walking, you may not hear a vehicle that may be right next to you, however, you can use the transparent mode where you essentially hear the sounds around you through the microphone. This function is very useful for when you cannot take off your headphones and want to hear what is happening around you. Finally, there is also the normal mode where the best energy saving is achieved while external sounds are limited to a fairly good extent but of course does not reach ANC. The switch can be done quickly with a touch without the need for a mobile phone. (10/10)
Ergonomics: They fit quite well in the ears even during exercise, but this is subjective and varies from person to person. Perhaps the slightly oval shape of the earpiece helps instead of the classic circular one. There are times when they may come out a little and require a bit of adjustment. There you need to pay a little attention as the call may stop if the option for ending with a double tap is activated, something that has happened to me a few times. If you have sweaty hands, you may have difficulty taking them out of the case. In the case, they look from the opposite side to how they fit in the ear, so you have to take them out with the opposite hand if you want to put them in with one motion or else switch hands. (8/10)
Handling: Overall relatively good and reliable. You have the option of double, triple, and long press for each earpiece, that is, a total of 6 different options plus the long press of both simultaneously, which I do not find so user-friendly. Personally, I use a double tap for play/pause/end call, triple tap to start voice guidance, and long press to switch between ANC/normal/transparent mode. Note: Touch only works with skin or suitable gloves and not thick motorcycle/ski gloves, etc. I would perhaps like a few more options than those available in the app. (8/10)
Build quality: It looks good in the short time I have had them, and the aluminum cylindrical piece looks nice. The case could have been a little sturdier, of course, something I consider as the only downside. They will show over time, of course. (8/10)
Notable downsides in my opinion:
-Coming from necklace-type headphones where I could take them out of my ears and let them hang, now I have to find the case to leave them. When driving, you either have to choose to wear one or have the case in an easily accessible place to take them out if needed. Of course, this was known before purchasing them as they are a different category compared to my previous headphones.
-If you are cycling or on a motorcycle, you need to be careful not to drop them if they accidentally hit your jacket or somewhere else. This also has to do with the category of the headphones, of course, but it was something that did not suit me so much compared to headphones with a cable for such activities.
A unique solution is to buy a thin rope like the one glasses have, which holds them from their frame, and I plan to do it soon mainly for fear of them falling while riding a bike.
-There is no option to adjust the sound, something I did with the previous necklace-type headphones when the phone was not nearby. The solution for this is to use voice commands after setting up this shortcut through the app. Personally, I say "volume 1-10" to adjust the sound to the level I want, starting the voice guide with a triple tap. Of course, in a noisy environment like riding a bike/motorcycle or a noisy area, you may have difficulty using voice commands effectively, but it is a solution that can save you when you need it.
If they do not present any damage in the near future and their price remains below 50€, I would buy them again.
Overall, I would give them a 4.5/5 rating, but I consider a fairer rating to be 5 stars instead of 4.