Handheld Dog Repellent, Ultrasonic Anti Barking Device, Ultrasonic Dog Bark Deterrents to Stop Dog Barking and Control Dog Barking, Handheld Devices with Dual Frequency for Training Dog (Green)

The upgraded dual -frequency ultrasound combines fixed and variable frequencies, allowing it to be used on a wider range of dog breeds. the anti barking device for dogs can also help you train your dog and correct bad behavior., It sonic bark deterrent is designed for all people. no skills required, with it, everyone can train the dogs professionally. when you press & hold the button, it will emit an ultrasonic sound that can only be heard by dogs., Safe to use & suitable for all size dogs:the human average hearing frequency range is 20hz~20khz, and the dog can hear a wider range from 15hz to 120khz., The pet gentle anti barking device is compact and portable. the effective range is 16.4ft, for training your dog at home or outdoors., The average human hearing frequency range is 20hz -20khz, dogs can hear a wider range from 15hz to 120khz. this ultrasonic dog barking device emits a 24khz -30khz frequency conversion ultrasound.