High-intensity Ultrasonic Sound: Our ultrasonic dog bark deterrent devices emit a high-intensity ultrasonic sound that effectively grabs your dog's attention without harming them. This gentle yet persuasive method helps to stop your dog from inappropriate behavior, making training more efficient and stress-free. Versatile Flashlight Function: With a built-in powerful flashlight, our portable barking control devices offer 6 different light colors for added visibility and safety during night walks. The ultrasonic bark control device also features a long-range flashlight that can reach up to 10 meters, making it ideal for outdoor activities. Long-lasting Battery Life: Equipped with a large capacity battery, our dog bark deterrent devices ensure a strong and durable battery life for extended use. Say goodbye to frequent charging worries, as our devices offer ultra-long standby time, making them perfect for travel and outdoor adventures. Portable Design: Our barking control devices are designed for easy portability, allowing you to train your dog with ultrasound wherever you go. The compact and lightweight design makes it perfect for indoor and outdoor use, and the high-frequency flashlight combined with ultrasound provides effective deterrence, especially in low-light environments. User-friendly LED Display: Featuring a user-friendly LED display, our ultrasonic dog barking deterrent devices allow for convenient viewing and operation. The clear power display design makes it easy to monitor the device's status, ensuring a hassle-free experience for pet owners.