It does its job perfectly for its price. A big plus for me is that you can give it a voice command on the go with the press of a button

5 stars easily for the 40-50 I paid. At higher speeds above 120-130 don't expect much because at such speeds the helmet also plays a big role. Amazing microphone and call quality.

It works well but it is bulky and the mechanism that holds it on the helmet is not the best and it falls off the helmet very easily if you hit it with your hand while taking off the helmet, etc

Very good. Connection is very easy. Good sound quality even with a jet helmet and wind. The only downside is that charging is not type C

The intercom, friends, for the money you pay for it, is really worth it. I don't have experience with a more expensive one, but apart from listening to music, it's perfect even at over 100km/h. On a trip I took with a second person on the bike, with strong wind and at 120km/h, I won't say you could hear crystal clear right away, but you could understand what the other person was saying. I think many factors play a role here, not just the intercom but also the helmets. Even if I had bought a more expensive one, I think I would have had the same results, which makes sense under such conditions.

very decent intercommunication.
up to 120 kilometers per hour that I reached while going to the airport, I could hear crystal clear. both in communication with the passenger and in a call, the microphone is quite good with very good noise isolation! for its price it is definitely vfm

honest for its price. I wanted a bit more volume in the music. but it's fine. up to 100 on a naked bike you can hear. after that, I think you need a better helmet.

The product is value for money for its price. Loud and clear sound, microphone that lets you distinguish what others are saying.
We were a group of 4 people and the communication was very good even at relatively long distances over 500-600 meters.
The trick to set them up for 4 people is as follows:
Hold 1 and 2 for 8 seconds to enter pairing mode. Once they pair, turn off 1 by pressing for 5 seconds.
Turn on 3 and put it in pairing by holding for 8 seconds.
It pairs with 2. Turn off 2, and put 4 in pairing mode.
It pairs with 3.
Turn them all off.
Turn on 1 by pressing for 5 seconds. If you press for 8, it will enter pairing and erase all previous pairs.
Turn on 2 by pressing for 5 seconds.
Turn on 3 by pressing for 5 seconds.
Turn on 4 by pressing for 5 seconds, etc

For €50 that I bought it, it is Fantastic!!!
Strong and clear sound from the speakers and up to 120km/h I could hear the person I was talking to!!!
First time I bought and used such a device and it is Super easy to use.
It connected easily with my friend's device which is from another well-known and expensive brand, and it lasted the whole trip to Tzoumerka and Baros, a total of 12 hours. And the battery was at 70% when I got home, even with music from the phone and from the radio and answering 3-4 calls.
Buy it
I will get another one for my wife

It loses its sound intensity after a few months, I have bought 2. The small locking teeth that attach to the base you put on the helmet break easily.

Perfect for its price, it is the best. The intercom works flawlessly, it has very good range and the microphone works very well, even during calls it is very good. Tested up to 120km/h, it is fine; beyond that, the helmet's insulation plays a very important role.

I have bought this one, before I had a Chinese one named T-rex. Unfortunately, it broke, I got this one and I simply don't hear anything. I went to the site that says for an upgrade, nothing happens. Spend an extra 50 bucks and get a branded one. In a new helmet with sockets, I don't hear anything.

After about two years, the passenger stopped hearing me. Already from last year, in order for him to hear me sometimes, I had to wiggle the cable that connects the intercom to the inside of the helmet. Now that doesn't work either. It connects just fine to my phone for music, radio, etc., and the battery lasts about 8 to 10 hours of continuous use. I might try changing the microphone, but I'm almost sure that's not the issue; I will get back to it, though.

It says international pairing but I haven't managed to connect it to intercom.. the instructions say to press two buttons at the same time and it says the same for everything.. also inside it tells you about the sound saying that it is Bluetooth, I don't know, and what is pairing.. other than that, if someone wants it for solo use and just to have music, I would say it's fine

mediocre with an old charging cable quite expensive for its price... the corresponding Chinese one from a site is around 10 euros

Very good sound, they hear me crystal clear whether I'm at a standstill or going 20 or 120 km/h. Above 80-90, I have difficulty hearing on calls while I can hear music well. It always depends on how good the helmet's insulation is; for me personally, it's average. Definitely for the money (I got it for 60 euros), it's value for money. Also, for anyone who has never had intercom, I would say it's one of the best gifts you can give yourself or a motorbike friend or someone who frequently travels with a helmet.

Update
After 5 months of use, I can say that at least it has covered me perfectly... I use it alone or with one more... today we received two more in the group that we will connect and I will tell you more... it might be the most value for money I have ever purchased.. I hear some crazy prices for singles or even doubles...

I haven't used another intercom ... But I have been very pleased with this one ... I bought 2 and they connect easily ... we also connected with a third one from the same company, a different model, and it connected just as easily (it just requires a bit of searching) ...
the battery has an amazing duration (it tells you the percentage on the speakers when it drops below 20%)
the sound is quality and loud (we were talking very well up to 150 km)
I would comfortably buy it again

The performance is very good for the money. It is a bit difficult to attach to the helmet. The good thing is that it has voice calling and you can easily call someone when you are on the bike.

After 2 years of use:

Positives:
The battery lasts a long time, the sound is great up to 110-120 kilometers (with a decent helmet) and it's fine if you want to connect with one more person.

Negatives:
The ONLY reason I give it 2/5 is because you CANNOT connect more than 2 people and be heard properly; someone will always disconnect, the volume will drop, and ultimately there will be no communication. Tested many times in various ways and with different devices/riders. To connect more than 2 people requires a master's degree.

TL; DR
Get something else if you want to connect with more than 2 people

I tried it for one machine, not a pair.
It works just fine up to 150Km/h.
Above that, the environmental noises are so intense that they "cover" the useful sound (with a closed helmet)

Not so easy to connect but easily manageable if you deal with it. Thessaloniki Thassos 5 people did not disconnect, 2 people connect easily....for music it's just what you need...Worth its money but don't expect top speakers

Excellent, worth the money, has very good sound and at quite a distance. Connects to other Bluetooth devices very easily.

It is the best at this price, get it for 50-60€, do not pay more if the price goes up, just wait. Very good bass, very good intensity (even though I have a problem with my ear), the quality is also very good, just know that it is good for 0-90 km with wind. If you have a big motorcycle for the highway, you need something more expensive, but for a scooter it is perfect, I highly recommend it...

Really perfect!
On a trip on the highway, up to 140 I heard just fine
I didn't try it above that!
I mainly use it as an intercom for talking to the passenger!
On city routes, up to 80-100 is flawless! Whether for music, or for phone calls, it's amazing!

Very good in everything it competes with companies with triple the price in sound quality and construction. The battery lasts very long, it doesn't have an indicator but I see it on the mobile's Bluetooth so no problem. It also plays music very well, it's value for money, take it without fear, it's worth it. It also connects very easily with another device and reaches quite far in terms of easy reconnection!

Very good in music, fantastic on calls, they don't realize I'm on a motorcycle when I speak. I recommend it. I have it on my Shoei GT Air 2

Very good intercom and honest for its price if you have a good helmet and at speeds of 130 to 140 with a distance of half a kilometer it sounds perfect with the other interlocutor.

It also works normally with the branded Cardo!!