The headphones, when they work properly, do their job as one would expect using bone conduction technology.

The sound during conversations is very clear, and this is their positive characteristic. For music, I wouldn't prefer them. Flat sound, and when you turn up the volume, your head shakes.

However, they have two serious drawbacks:

1. Connectivity issues. You constantly need to do something to reconnect them to the device you are using. I reached out to online support, and I admit they try to help you, but in a completely standardized way. It's a waste of time.
2. Battery life. The 10 hours claimed by the manufacturer are far from reality.

In conclusion, I wouldn't buy them again

I use them as an alternative to long hours of using silicone headphones. They are more comfortable, but with a penalty in volume and quality. The pairing between devices is clearly more cumbersome than AirPods.

I would give it 4* but I would only give it because it doesn't have loud sound.. And in some apps that play loud sound, it trembles in the ear and I can't stand it. Not because of the power though..
Other than that, they are lightweight, easy to use, very easy to connect, and the battery lasts comfortably for two days with more than normal use.

Perhaps the most comfortable headphones I have purchased. They do not tire my head, very good noise cancellation, my conversation partners can hear me clearly and they do not prevent me from hearing those around me at the same time. However, the most important thing is that with these headphones I hear through the bone. Having a hearing problem (otosclerosis which means a problem with the stapes and not with the auditory nerve) hearing through the bone is like I have no problem and finally I can talk on the phone and hear the conversation partner crystal clear.

In 14 months, one earphone broke down, with very light use there is no service, the warranty does not cover repair or replacement, it does not even give you the possibility of communication, they are scammers

I don't know if mine have any problem, but I will tell you what bothered me.
From 25% to 100%, the only thing that changes in the sound is the tremolo from the bass.
The more you increase it, the more it trembles and it annoys me incredibly!
The sound of the music is very low, while in the descriptions it says that it is super and so on..
It also sounds like the speaker is broken. It's like listening to an old, low-quality radio where the bass trembles instead of actually hearing the bass.

Something happens during the call..

I hope it's really an isolated incident and not like this in this situation.

Otherwise, it's not worth the almost €190 I paid. I'm sorry!

If someone knows what I mean and can help me, any action and suggestion is welcome.

Excellent!! It charges easily and you don't forget it or lose it easily. I have an iPhone and it connects instantly

They are the best headphones for anyone who wants to listen to music or talk while also being in contact with the external environment. The sound and microphone quality is incredible. You have the ability to connect them to more than one device simultaneously.