5pcs Dog Barking Control Device: Handheld Anti Barking Tool Portable Ultrasonic Dog Bark Deterrent Pet Training Device For Indoor Outdoor Use

Unique ultrasonic technology: this dog barking controller uses unique fixed and variable ultrasonic technology to easily stop dogs from barking. Humaninaudible frequencies: the variable frequency emitted by the ultrasonic device is inaudible to humans but effectively attracts the dog's attention, correcting behavior without shocks, vibrations, or noise. Wide effective range: the ultrasonic dog deterrent has a wide effective range, making it suitable for various situations, whether you're walking or jogging. Stylish and lightweight design: designed to be stylish and lightweight, it is comfortable to hold or place in your pocket, making it convenient for both indoor and outdoor use. Versatile use: ideal for home training, park activities, or walking and hiking with your dog, this device is a great choice for any dog owner.