Brand NEW Anti Barking Device Dog Barking Deterrent Device with Dog Whistle 3 in 1 Portable Bark Control Device for Dog Training, Behavior Training Stop Barking with 16.5 Ft Control Range for Outdoor and Indoor use This device provides a safe and effective solution for dog training and bark control. 3 MODES: -Sound training mode. -Ultrasonic Mode -?3 frequencies) -LED light mode Plus This listing comes with a Whistle This Multi-function anti barking device effectively controls and stop actions like digging, fighting, eating unsafe food, chewing furniture, etc 2022 newly upgraded anti-barking control devices adopts the latest Advanced technology to train your dog. It has a built-in smart sensor. This Bark Control Device emits ultrasonic sound within the dogs hearing range of 23KHZ-26KHZ. The side of the device is equipped with 3 different frequencies of Sound Waves (stable frequency, undulating frequency, and irregular frequency). Chose different waves to make it reduce the training effect on the simple frequency waves for a long time. This portable barking stop device has a Human beep function button, you can press the beep button before every ultrasonic. Using 3 frequencies alternately in each period of time which will help them understand that their bad behaviors will cause uncomfortable experience. The dog repeller BEEP mode and dog whistle provides another way to help training. After multiple use, the BEEP mode will become an instructive reminder to replace the ultrasonic sound. Equipped with a 400mAh large capacity rechargeable battery. This anti-barking deterrent stopper device can be charged via USB cable (included), and support a long daily-use time of up to 13-20 days with only 2 hours of charging. It can be easily carried around. The dog repeller can be used as an ordinary flashlight when walking your dog at night. Correcting unwanted behavior is the most important. This works best for dogs 6 months to 8 years old. When the dog stops inappropriate behavior, give the dog a treat. Treats, or petting are great to reinforce the training's effect. This Dog Bark Deterrent has 16.5ft Control Range, You can use it to train your own dog or drive away unfriendly dogs you encounter on the road. See pictures for more item details. Trusted Seller-Fast Ship!