It is very good quality, the only drawback is that if you use the headphones to change songs, the battery runs out very quickly... However, if you switch from the phone, it lasts for 10 hours for sure

Very good sound and battery. It connects easily with my phone (Xiaomi Mi MIX 2S) without the need for an extra application. It sits well on my neck and the earphones stick together with a magnet. Unfortunately, it does not have vibration to notify you of calls, but it produces a sound if you happen to wear the earphone at that moment. For those who buy it from abroad, they should know that when turning on and off the device, as well as when connecting and waiting for connection, it produces a notification message in Chinese that cannot be changed.
Since I replaced them with TWS earphones, I now use them for Windows PC and while they work flawlessly for audio playback, the microphone does not work properly with Microsoft Teams and Skype. I have not been able to find a solution so far.