The product is very good.

1) Sound: It is very loud (I constantly have to lower the volume), I can hear my interlocutor very clearly without any interruptions or issues. It connects instantly to the device without any problems and has a good range, for example, inside the house (3 walls away, but within the range of 10 meters) and I can speak/hear very clearly. The vibration is very strong, you can't miss it, even if you don't have it on you.

2) Size: I saw in other posts that they say it is big and such, personally I don't find it big at all, on the contrary, it is sleek and smaller than other similar devices. Also, the clip it has is sturdy and can be attached anywhere.

3) The functions it has are very good and I haven't noticed any issues (I haven't used it on 2 devices simultaneously).

4) Cable & Earpiece: I don't have anything to say about the earpiece, except that I would prefer better build quality (only for the earpiece). Its cable has enough length and personally, I almost always have it clipped on my jacket or sweater (because sometimes it bothers me on the collar), also the cable's build quality is not very good, it would be better if it was a bit thicker (more durable) and it should have some protection (a plastic piece attached) at the point where the cable connects to the earpiece, because what they have now, where the cable simply goes into the earpiece's hole without any protection, is just cheap workmanship.

I always pay attention when closing it (because it closes abruptly), I hold the cable under the base of the earpiece, so it doesn't get damaged quickly.

5) Battery: I expected the battery to last longer, but that is relative to how many hours each person talks. It lasts about 2-3 days. Also, on the phone it shows the battery percentage, but it shows it in increments of 20%, meaning that as soon as I charge it after a few hours, it won't show me 90% but 80% and it will stay there for several hours, then it will show 60% and so on, this is a negative aspect, but the fact that I can at least roughly see how much battery it has is very good.

Unfortunately, in all Bluetooth devices of this style, they don't last for a very long time, but they are much more convenient than those that you have to constantly have in your ear.

As for the silicone patent, I haven't tried it yet, but it is a good idea to make it last longer.

Overall, I am very satisfied with the capabilities it provides.

6/6/2020

Good Bluetooth, but now no one can hear from the earpiece. It lasted for a good amount of time though.

I am very satisfied, I haven't found any negatives. Maybe just that it is a bit bulky and large. I bought it for 19.5 euros and I believe it is worth every penny. I drive for many hours and use it almost all day. I charge it for 15 minutes a day, or every other day for 20-25 minutes, and that's because it is below average. So far, everything is good after two months. The cable is not short, it is normal like most, just don't hold it around your waist. I have held it on the back of my hood and it still works perfectly, so don't worry that it won't work if you have it higher up. If you move away without obstacles, it reaches 7-8 meters and then starts to interfere. It easily withstands a wall indoors, meaning you can change a room, to put it simply. Also, it has fallen down twice from 1.5 meters and once from a lower height. It came loose on one end and went back in very easily. It feels like rubber on the outside and it might help. The cable is definitely thin, like most. However, I believe that even if it is thicker, at some point the contacts inside will still come loose, so in general, headphones like these need to be handled with care, not to be overly rough with them, and use them as long as they last. It speaks Greek and tells you the number that is calling you. One by one the numbers, not the name of the contact. Personally, this doesn't help me much. When I ordered it from a store in Athens (I live in Crete), I ordered three pieces, two for colleagues. No one has had any problems so far. (There were only positive comments and I believed it was worth it, so I bought all three and it really was worth it. I hope I helped you. P.S. I saw this comment from another user in a comment, a drop of silicone where the headphone starts to endure pulling the cord outwards for a longer time, it's a good idea to help it. Be careful when you stick it so that it doesn't look bad.