High-Efficiency Painless Training, Rapidly Corrects Undesirable Behaviors: The Anti Barking Device Dog employs advanced 25kHz ultrasonic technology to swiftly and painlessly correct undesirable behaviors such as barking, biting, digging, and jumping. Compared to traditional bark collars, vibration collars, and dog whistles, it offers a gentler yet more effective solution, making it the superior training choice. Friendly Training Experience: Avoiding coercion and physical punishment, the ultrasonic frequency is effective for dogs yet inaudible to human ears. The Anti Barking Device Dog ensures no discomfort during training. Requiring no vibration, noise, or physical contact, it suits dogs of all sizes, making the training process more friendly and comfortable. All-in-One Functionality: Beyond its core behavior correction, the Anti Barking Device Dog features a built-in LED flashlight for nighttime illumination during evening walks. Its strobe deterrent effectively wards off approaching aggressive or unfamiliar dogs, creating a safer outdoor environment for you and your pet. Fast Charging & Extended Standby: Equipped with a Type-C fast-charging port, the device charges fully in just 1 hour, significantly boosting charging efficiency. A single charge provides up to 60 days of standby time, reducing the hassle of frequent recharging. This makes it particularly suitable for busy pet owners and convenient for daily use. Flexible Training: Offering three training modes, you can choose to quickly correct undesirable behaviors or conduct routine obedience training based on your pet's specific actions or training needs. Easily handle different situations, helping you communicate better with your pet and cultivate good behavior. You will receive：Dog Bark Deterrent Devices *1+USB C*1 No Bark Ultra Anti Barking Device Dog,Nobark Ultra Dog Training Tool,3 Levels Rechargeable with Flashlight,for Large Medium Small Dogs Indoor & Outdoor