I have had it for about 5 years.
Positives: easy to use, very decent sound for everyday use or travel. The helmet plays a big role and also proper placement is important.
For example, with the first helmet I had, I didn't place the speakers correctly or, to be precise, I didn't like them being placed where the helmet had a recess because they ended up in my ear, resulting in poor performance. But it wasn't the machine's fault. When I changed to a helmet that had the correct socket, the issue didn't bother me again.
What another friend mentioned above about the battery indicator unfortunately is true. At some point, you hear a low battery goodbye and that's it.
For everyday use, it lasts me about a week and something with approximately 1.5 hours of use per day. I don't consider it bad.
So, 5/5 not because it's the best intercom that exists, but because it is affordable and does what you need.
I can no longer ride without it - it seems strange to me, let alone go on a trip without at least some music

3.5 is the actual rating I would give if possible. I will start with the negatives. Firstly, and the main reason for deducting 1 star, there is no battery indicator... No matter how much I searched, I found absolutely nothing... The battery life is very satisfactory (I measured about 8.5 hours of usage, with the volume at about half and maybe slightly lower), but what do I do when it reaches the end and simply displays a low battery and shuts down? The remaining half star is lost in the pairing between them, not as an intercom (it is very good for communication between passenger and driver as well as for calls, even at high speeds on the highway), but as a media player when sharing what you are listening to with the passenger, there are so many stutters that many times I have to stop at the side of the road to restart the intercom. It doesn't happen always, but it does happen and it's worth mentioning. Overall, as a media player when driving alone, it is very good and obviously much more convenient and safer than earphones. It has no disconnections and the controls are very easy. Overall, for the 160 euros I bought them, I don't think you can find anything better that is also branded. If it had a battery indicator and there weren't so many stutters in media sharing, it would be even better and I would highly recommend them, but since I consider them a one-time cost, as they will last forever with proper maintenance, if you can afford to spend a little more, it won't be wasted. If anyone knows a way for me to check the battery of the intercoms, it would be great if they could write it, thank you.