Posted by a reviewer on Amazon

Have had for 2 months and is broken

Posted by a reviewer on Amazon

Was difficult to set a low threshold and would go off while the dog was not moving

Posted by a reviewer on Amazon

Finally after a few well timed barks the collar starting shrieking and would not stop

Posted by a reviewer on Amazon

Took out batteries changed batteries cleaned microphone hit is alot

Posted by a reviewer on Amazon

Just plain busted with a high pitched noise to wake the dead

Posted by a reviewer on Amazon

And since the correction was unreliable it was not very usable an my dog is very responsive to ultrasonic bark collars welsh corgi

Posted by a reviewer on Amazon

I am returning this collar because it did not state that you cannot wear this collar on your dog when it is playing as it will go off during that time

Posted by a reviewer on Amazon

Since we have a young dog that plays a lot it would be most confusing to him and defeat the purpose of the collar