Collar against constant barking and howling of a dog. Thanks to the use of ultrasound and an intelligent system, the barking and howling of the dog will be limited. The collar should be placed so that the device is positioned on the dog's larynx. As soon as it starts barking or howling, the vibrations of the larynx trigger the device. Thanks to this, the dog will not be randomly reprimanded by the collar when barking at another animal. The collar turns off as soon as the dog stops barking. The emitted ultrasounds are safe for the animal. The dog learns that the collar only activates when it barks. The system allows setting the device's sensitivity to barking (LOW and HIGH buttons) and selecting the emitted sounds (AUDIBLE - audible to humans and ULTRASONIC - inaudible) as well as a button to turn the sensor on and off. The collar circumference is adjustable: 20-40 cm (made from elastic material - can be stretched up to 65 cm). power supply: 2x AG10 battery (included) weight: 40g Number of pieces. in carton: 100