It doesn't have a very loud sound, it is sensitive but it doesn't go off at the first rain or every time a noisy motorcycle passes by. I've had it for almost two years and I've changed the battery once.

With the first rain the sound broke. With the second, the lock jammed and every time I locked it, it made a prolonged sound that wouldn't stop. The keys rusted in a year and a half... disappointment

For the money it costs, it is flawless. The siren is quite loud. I haven't changed the batteries after 1 year yet. The sensitivity is quite good and just right. It's better to protect your motorcycle with many different, even cheap, ways rather than with one expensive one. I recommend it!
P.S. In heavy rain, it goes off sometimes, but it only goes off as a warning. I continue to recommend it

Here the famous phrase "All honey-honey and nothing from the frying pan" fits perfectly, promises a lot, it even has a satisfying description for you to enjoy.. and in the end, it doesn't do any of the things it claims correctly.
It is almost fake (in construction), it broke for me because I turned off the machine! in the first heavy rain it will go for a walk and the sound and overall it's not worth the money it clearly is a Chinese product that tries to capture the markets from the internet as someone to hold it in their hands before, I don't think they will buy it.

The worst thing... fake construction... the keys twist for fun... wasted money and obviously not even suitable as a joke for anti-theft.

The feeling that the lock has in your hand does not make you trust that it will withstand a break-in, I expected it to feel heavier.

After arming the alarm, on the first shake it notifies and on the second it hits, it has a piercing sound and quite annoying that it needs to do its job

A first phase of security for the machine, good warning, could be a little louder but ok. It also has a difficulty in unlocking.

Value for money, it withstands the rain, although I would like it to have more dB. It deters someone who is going to steal, but if you are inside the house and have it a little further away, it is not easily heard.

The lock is not very good, a locksmith told me, maybe it's worth it for its alarm, it is quite strong and sensitive, with heavy rain it may only hit. Battery change etc. is simple

After a week of use, the alarm stopped ringing. I opened it to change the batteries and realized that the batteries had exploded and couldn't be saved

I received it yesterday. However, there is a problem with the lock on the product I bought and it doesn't unlock easily.

Very good, good sensitivity to shaking and impact. I had to cut it with a wheel because I had locked it but I had forgotten the key 150 kilometers away, it was very difficult for me to cut it with the electric wheel. Luckily, I also had a Roadside Assistance.

I have it in my hands for a month now, daily use, the keys stick quite a bit, needs WD-40 and it will be okay. I am on the 1st floor, the engine is downstairs and the alarm can be heard when I am awake. For 19 euros that I bought it, it is good, I recommend it 100%. The packaging had another set of batteries, its case, its Allen key, and a reminder to hang it from the grip.

09/05/22 the batteries lasted about a year (one set) with daily use.

4/8/23 until today, I have forgotten the lock on the disc brake 2-3 times and went to start, the lock did not break and I did not damage the disc brake.

Very good, perfect for its price, very sensitive and with a strong alarm.

30/09/23
One of the best purchases I have made, I haven't even changed the batteries

A first phase of security for the machine, good warning, good panic sound, could be a little louder but it's okay, you can hear it just fine

It hits hard for its size, I would like the sound to be even louder but it doesn't matter.
It comes with the spiral that you put on the steering wheel so that you don't forget to unlock it when you want to leave.
The package included spare batteries. (3+3)
It has a warning before the alarm starts to sound.
Overall, it seems like a good purchase, time will tell.

Sensitive alarm, with a loud sound. It reacts to small vibrations in the engine and sounds near the engine, making a warning sound, and if either of the two continues, the alarm starts. It had no issue with rain, but it would be good to protect it with a cover if you have one. For the money, it is satisfactory.

*I haven't tried it, but there are screws that presumably open it, and you can change the battery if the alarm intensity drops too much.

It seems to be a sturdy construction. It is also small and, consequently, easy to carry, as well as easy to attach to the disc plate. A worthwhile purchase.

Sturdy lock, 4 stars because the disc brake needs to cool down before its installation, due to expansion and contraction it is quite sensitive and activates the alarm

It does its job as it should, I used it all winter, it didn't have any problem with humidity, it is quite sensitive and the battery still holds. The quality is not the best, but I didn't expect it to be such a great value for money

I have it for a month. For its price, it's very good so far. It's small, locks easily, and has a loud sound + a warning beep before the siren. Don't expect it to be as good as regular alarms, but for me, who lives across from where I park, it's enough to hear it with closed windows. I can't know about its resistance to break-ins, but surely for a first stage of security, it's good, I think.

It has endured frost, heatwaves, rain, and it doesn't show any signs of damage. I haven't needed to change the battery yet. It functions like the first day.

I have it for a month, it endured 3 rainstorms, and during these three rainstorms, due to being activated by strong ones, it lost a considerable amount of battery and now it is at the point where it is almost inaudible, otherwise no problem with the lock

Solid construction, durable and with a loud alarm that hits very hard, and it's so small that you can hold it with one hand.

Locks easily without the key.
It has 3 small batteries inside that are easily replaceable and it has the Allen key inside to open.
I think the alarm volume is quite loud.