# ♡ S-chan's Pet Supplies List ← List of Items for Sale Anti-Barking Device for Dogs, Bark Control, Ultrasonic Bark Control Device, Anti-Barking Goods, Dual Ultrasonic Box has scratches. [Safe and Effective Behavior Correction] The dog anti-barking device emits 20-25 KHZ ultrasonic waves, which are beyond the human hearing range, but can easily attract the dog's attention. It does not harm your dog like a dog whistle, and can safely correct unwanted vocalizations and stop the dog from barking, or prevent it from eating unsafe food. It is an effective pet corrector, suitable for all breeds and sizes of dogs from 6 months to 8 years old. [Sonar has a range of up to 10 meters] This dual-sonar bark control device has higher power and effect than single-sonar devices on the market. This electronic dog whistle is equipped with an 800mah rechargeable battery, which can be fully charged in 1-2 hours and can be used for about 20 days. [Two Modes] Repel Mode: Emits high-intensity ultrasonic waves, and the flashlight flashes at the same time to drive away ferocious dogs. Training Mode: Emits lower-intensity ultrasonic waves to assist in daily dog training, such as stopping excessive training, barking, fighting, biting, and other bad behaviors. The flashlight also has a long bright mode, suitable for night dog walks. [Button with Vibration Effect] When you press the button of this ultrasonic dog anti-barking control device, there is also a vibration effect, which provides a better experience. When the battery is low, the indicator light on the button turns red.