It is not very durable. While they were working, they had a good quality-price ratio. But after 1 year, they have already broken (no sound in the right ear at all). They are not sustainable and not worth buying :-(

Maybe the worst headphones I have tried for music.

The bass is non-existent.
The mids are terrible.
The highs are excessive, they hurt the ears!

The Xiaomi Piston at half the price were much better, as well as the Huawei AM61 that I own.

I have had them for a year. I have not had any complaints about the microphone so far. Also, the music playback is quite satisfactory. The bass becomes noticeable at high volume. Something that bothers me is that they stick out a little, but it is something you get used to. I would recommend them.

The headphones are very good for music playback, especially for their price. Good volume, minimal distortion, comfortable, relatively good external noise isolation.
However, I bought them for teleconferencing, when I connect while I am not at the office. While the above advantages apply there as well, the microphone is very mediocre. The callers cannot hear me and I have to hold it close to my mouth to speak.
Nevertheless, if you want them for listening and simple calls, it is a good purchase.

I bought them 4 months ago to mainly use them for connecting to a laptop for Skype calls and music.
My first experience with them brought me very positive results. Nice sound and my Skype conversation partners could hear me very clearly without much background noise.
After 4 months of use, while overall I am quite satisfied, the left earphone started to sound very low. Tomorrow I will send it for warranty to the store where I bought it. I hope they will replace it for me.

I kept them for about 2 years... they burned out on their own, one earphone after the other, with a difference of 2 weeks...
They fell bravely in battle... I would buy them again if their price hadn't gone up to 30, from the 20 I bought them for...
They are worth it for anyone who wants a quality and good hands-free device... 5 stars

The headphones are very good value for money. I have already bought them twice. The first pair lasted me almost 2 years of almost daily use

Very good hansfree for their price. In the package, a pouch is given to carry them, which is a very good addition in this price category. They have good bass, sound loud, and have a very clear sound. I don't know how long they will last, but I will inform you. So far, I highly recommend them. The best value for money hansfree.

Very good sound and quality. The lack of bass is corrected with the in-built equalizer of the phone. In my case, the phone is Xiaomi, simply go to settings > system and device > additional settings > headphones & audio effects and enable the equalizer, as well as inputting the model of the headphones after activating the Mi sound enhancer.... In the model, of course, after some searching, the setting of Mi noise cancelling sounds better

I had the quantie hybrid which were amazing and these are their evolution. For 20€, the best sound you will find in earbuds, no competition

It is a good pair of headphones. In terms of sound, I would say they are "bright" and lack bass, although this can be largely corrected with a good equalizer. Overall, however, they sound more than good.
Where they stand out is in the build quality. Almost everywhere is made of metal, with a good quality cable and quality buttons. Add to that the serious appearance and we have a very good hands-free device.

They are very good, just don't expect anything amazing.
I don't know in general how the price-quality relationship is formed in the headphone market, I just note that you shouldn't expect something exceptional because the reviews may create quite high expectations.
They may be excellent for their price, or maybe not, I can't have an opinion on the value for money as I said.
Regarding their sound quality, I can say that they are good, up to a certain point.

Edit: My right one broke, resulting in significantly lower volume.
They lasted almost 2 years (5/2018 - 3/2020) with very frequent use.
I'm considering, and it's most likely that I will buy them again.

They have great sound, perfect microphone, perfect isolation for their price, they are the best, I recommend them!!

I give them 3 stars because they stopped working after six months and the left earphone broke. Overall, these headphones are nothing special. I bought them based on the good reviews they had, but when I tried them, they were just ordinary headphones

I will not do a full review but 1) on the 2nd day of use it started malfunctioning, 2) no matter what ear tip I used, it would not stay in my ear, it kept falling out all the time, 3) the sound quality was terrible, even at full volume I could barely hear anything. I don't want to criticize Xiaomi, but this particular headphone is simply not good.

In terms of sound, they are amazing. I have not tried headphones with better sound for this price. However, I was not satisfied with the comfort, fit, and external noise isolation. It may be a subjective issue or a matter of ear shape. After a few minutes of use, I start to feel them in my ears, and when I take them off after a while, I have a buzzing sensation. Despite that, they do not isolate external noises well. For example, my previous Roccat syva headphones, although they did not have such good sound, I did not feel them at all after hours of use, and they had very good isolation. The cable does not get tangled.

Positive:
Amazing sound, good fit in the ear, nice design.

Negative:
The bass is not as good, it is a bit expensive.

Overall, if someone is not so interested in bass and more in sound quality, I would recommend them.

After 2 years of use, one earphone is not working and the other has very low volume. While they lasted, they were very good. I also have the previous model they released, which I have had for over 3 years and it works fine.

The headphones are excellent. They are worth their money as they have amazing sound and material quality. The bass, which some claim is nonexistent, personally doesn't interest me as I listen to Greek folk, light pop, and some foreign music. So, the treble that I need is fantastic.
I bought them from a large store in Greece at the privileged price of 25 euros. I mention this because I have seen comments from people who confuse the regular Xiaomi with the ones that are HD. The regular Xiaomi ones are 16 euros, not 26, so don't comment on the regular ones here because these are the HD ones.
In short, the headphones are flawless from all aspects and are a great value for money. At this price, it doesn't get any better.

Amazing headphones if you combine them with a Xiaomi phone because it unlocks an additional menu and there you really understand the difference. If you use them with a phone from another company, I don't know their performance. I bought them for 16.00 euros, so they are worth it.
Update 31.5.19: After five months of daily use, the headphones remain flawless. I don't know what problems those who voted against the positive reviews had, but personally, I am so satisfied that I bought a second pair for my husband. I repeat, for 16.00 euros, they are amazing.

Incredible sound quality for both music and speech. The weight is slightly noticeable after many hours of use, but it doesn't become tiring. The bass could be a bit stronger, but it can easily be corrected with an equalizer.

I bought them to use with a Xiaomi Mi Mix 2 4G Phablet 128GB ROM - BLACK and they simply don't work with it. I don't know if it's the specific model of the phone, but these headphones were recommended by the company. Searching the internet after the purchase, I found out that this particular problem is widespread and known. So, these headphones - microphone don't work with the Xiaomi Mi Mix 2 4G Phablet.

Very good choice for in-ear, moderate highs, good mids and lows while I found their bass quite satisfactory. Very comfortable (thanks to the option it provides for 4 different sizes to fit in every ear).

In terms of sound, the headphones are very good, across the entire frequency range. It is impossible for someone not to enjoy them. On the negative side: the noise isolation is mediocre to poor (based on movement on the streets) and the cable is very plastic and does not straighten out at all, while I am not sure about its durability, time will tell.

They are worth their money (10E from China). They play nice, full of bass. The problem is the cable tangles and the discomfort after some time.

For the money, I don't believe there is anything better. Very good sound, they don't get tangled, very durable against sudden pulls. I have been a owner for six months. I highly recommend them

I am the owner of Xiaomi Redmi Note 4 and I can say that these specific headphones are relatively satisfactory in terms of functioning very well with Xiaomi phones. However, there are also negatives such as the cable getting tangled frequently. They are also fragile, as they lasted for me from January last year until September 12, 2018. Initially, as I noticed, it is not good to put these headphones in your pocket because the wire inside gets damaged, which resulted in the wire being cut from the left earphone.

I bought the headphones from the official Greek Mi Store for 30 euros.
Initially, I was impressed by the packaging, which was very well done, with a special pouch to safely store the headphones.

My first impressions were mediocre, as the bass seemed very low, but the clarity in higher frequencies was impressive.

After doing some research on the internet, I found an easy hack to enhance the bass. On the black part of the headphones, next to the point where it goes into the ear, there is a small air vent.

By covering this hole with a little tape, the headphones literally transform, with the bass becoming powerful and solid, without any loss of clarity.

After the hack, I consider these headphones to be an incredible value for money and I highly recommend them.