I bought it, put the battery in, and tested it with the plastic tester to see if the electric shock works. It does nothing, the dog continues to bark even with the air. The collar does nothing, occasionally you hear the sound but the dog continues to do its own thing. DISAPPOINTMENT, DO NOT GET IT!!!

It does the job you want, but the closure was taken off by one of my dogs while the other one did not. It's worth the money though and easy

For its price, it is very good....7 settings regarding the sensitivity of barking...I don't know if the dog got shocked by the electricity, but with the beep it makes as a warning, the barking stops...so we leave and we are sure that it doesn't bark...the only downside is that it doesn't have a power-off switch and the first battery drained in 10 days...and it costs 1.5 €. I only put it on when I need it

The worst thing on the market. I don't use it, I threw it in the trash. The company I bought it from didn't respond when I wrote to them that it hits just as hard from zero to the end. I smashed it to the ground.

Guys, I don't know if it's my fault, but the dog went crazy, it got so scared that it accidentally bit me when I tried to take it off... I will never do it again.

We bought it out of desperation because our dog has been waking up the whole neighborhood. It's a matter of fact that as soon as we put it on for half an hour, the dog started barking hysterically, as if it was having seizures out of fear. We were very scared when we saw him in that condition.

I bought 2 collars for 2 dogs. The collars are the best, very good quality and price ratio and besides that, my problem with the dogs barking like crazy and having the police visit my house every week because of the noise was solved. The dogs have calmed down completely and now they only stop with the sound. There is NO DANGER as some say and the collar has 7 sensitivity levels, not power levels. I am completely satisfied and the most important thing is that my dogs were corrected within 2 weeks without yelling, fighting, etc. Thank you very much!

I don't know why, but after a week of using this collar, my dog suddenly became very aggressive, even though he used to be gentle, and now he looks at me as if he wants to bite me.

The product works fine, but I do not recommend it because whenever my dog scratched in that area with the collar, the sound would start, and when he played, he got shocked by the electricity..! I didn't put it on him again.

Very good and effective. I have spent a lot of money on collars with 50€ and this one solved my problem. The only negatives it has are:
1. It is not waterproof.
2. You cannot adjust it to a specific intensity level. For example, level 5, but it gradually increases the level.
At the beginning, the first 2 levels only have sound and then on the 3rd level, it introduces electric shocks.
Of course, it takes a little time, but as soon as it reaches the 4th level, the dog stops barking.
It doesn't affect the dog much, in other words, it doesn't hurt them. On the contrary, there is a collar on this site that is very dangerous, which forced me to change and get this one.
# WARNING some may be defective but there is no problem with what they send you. New without charge