Anti-barking device for dogs. The maximum ultrasonic distance is 10m. It is unused, but the package has damage. Product description [Safe and Effective Behavior Correction] Are you looking for a safe and effective way to train your dog and correct its behavior? Dog bark deterrent device, 20-25 It emits ultrasonic signals of kHz, which are inaudible to humans but can easily attract a dog's attention without causing any harm. 【Dual Head Long Range Bark Control Device】The sonar head has an effective range of 10M: This dual head bark control device is higher output than single head devices on the market, making it more effective. This electronic dog whistle is 1000 Equipped with a rechargeable battery, it can be charged within 1 to 2 hours and can be used for approximately 50 days normally. 3x faster operation change: Biting? Digging? Fighting? Chasing? Our anti-barking device is not just for barking prevention, but also utilizes the latest NPS patented technology to attract your pet's attention. Make your neighbors sleep more happily and peacefully, and transform your dog into a smart one with gentle training! 【2 Ultrasonic Modes】This ultrasonic bark stopper comes with 2 modes and 1 flashlight, helping to prevent excessive barking. The drive mode emits high-intensity ultrasound, and the ultrasound simultaneously flashes the flashlight to drive away naughty dogs. The training mode emits lower intensity ultrasound, which can correct unwanted behaviors such as fighting, biting, and excessive barking. The flashlight also has a long light mode for walking dogs at night. 【Compact and easy to carry and use】 This ultrasonic dog bark deterrent device has independent clear keys that are easy to use, and the anti-lock key helps prevent accidental triggers. Also, pressing the button enhances the user experience through vibration effects. This device also includes a red low-power LED and an adjustable wristband, convenient for outdoor use. Saves endless effort and is energy-efficient. Weighs approximately 85g, making it very light and convenient to carry. Recommended! Also exhibiting Discipline barking