After almost two years of use:
The only negative is that in some places the yellow color has come off and it is rough and does not fit under the passenger seat on the track. Other than that, it does its job and more, and the battery still holds strong!
Pro tip: depending on where you lock it on the disc, it is also more or less sensitive. If you hang it low, it is very sensitive, while if you put it near the forks, it sleeps standing up.

Very good build quality, so far it works accurately. Once I install the XENA app on my phone, I will come back...
Update: after 1 year of use, it continues to work perfectly as a device.... after you first connect with it through the app, which is a bit difficult. (Bluetooth doesn't connect with it the first time, it requires a second attempt...)

Very sturdy construction, one of the best available on the market with powerful sound, easy application on the record player, just be careful not to drop it and keep it away from vibrations under the saddle.

Very good and sturdy. Just know that if it falls down, you will cry for the alarm and generally it is not for vibrations, so when you take it off the disc brake, go straight home, not under the saddle because it is not for vibrations, I repeat.

In the bmw s1000xr it was a one-way street. One of the best, if not the best, disc brake lock. 1 year of use and it is flawless. Battery replacement after 2 years

Very sturdy construction, easy operation, quite powerful speaker. Very useful as it keeps annoying-strange people away from the machine.
-One of the best in its category with Double Lock function that makes it even safer, and very important is the placement of the alarm speaker from the inside so that someone cannot easily block it.
-I have had it for 14 months now and the battery holds up well, although the volume of the speaker has started to decrease, which means that at some point it will need a battery replacement, but in terms of autonomy, it is satisfactory for me.
-What it needs is to be placed on the disc brake in a way that it cannot be easily moved by the wind or its weight, and the alarm is triggered by mistake.
-4 stars because the internal mechanism could have been placed more accurately. The plastic mechanism inside plays in its socket, so if you don't secure it with something, it may trigger even more false alarms.