1. Effective ultrasonic dog bark deterrent device: This portable unit emits 15000-30000 Hz ultrasonic waves to stop barking and deter aggressive dogs during outdoor use, providing safe protection against dog attacks. It helps prevent attacks when you are out. It can produce strong stimulation to dogs and cats (inaudible to human ears), causing discomfort and interference to animals. 2. Intelligent ultrasonic technology for dog training: This versatile bark deterrent uses smart ultrasonic waves that intensify as animals approach, encouraging them to retreat. It is suitable for both deterrence and training, with ABS material ensuring durability and reliability. 3. Long-lasting battery & Type-C charging: Features extended battery life for continuous operation, with a convenient Type-C charging port for quick recharges. An LED indicator warns when voltage drops (dim light), so you can charge promptly to maintain optimal performance. 4. Portable design with LED light for easy use: Compact and lightweight, this device includes a built-in LED lamp for visibility in low-light conditions, making it perfect for travel. Avoid deliberately teasing dogs to preserve effectiveness, as repeated exposure reduces impact. 5. Use scenarios and applications: - On walks, park visits, or outdoor errands to deter barking or approaching dogs. - In home yard or training sessions to reinforce desired behavior with real-time deterrence. - During night travel or camping for improved safety and visibility.