Say goodbye to noisy barking and ineffective shock collars. This 2025 upgraded ultrasonic dog bark deterrent combines smart technology, safety, and convenience to help you control unwanted behaviors in a gentle, effective way. Featuring 3 ultrasonic emitters, it delivers a stronger range and broader effectiveness than single-emitter models. With three function modes, you can adapt the training method to different dogs and situations. Use the 25kHz fixed-frequency mode to repel sudden barking. Switch to the 15–30kHz variable mode to gently condition habits like chewing or digging. The flashlight/SOS mode adds visibility for night walks or alert signaling. The built-in auto shutoff after 10 seconds prevents overstimulation, protecting your dog's ears and making it safe for daily use. Suitable for dogs over 6 months, all sizes and breeds. Designed for real-life use, this dog bark control device features USB-C fast charging—fully powered in just 40 minutes—with an industry-leading battery life of up to 90 days. The LED display indicates battery level, so you're always ready to train. Pocket-sized and lightweight, it fits easily in your hand or bag and comes with a comfortable wrist strap for outdoor use. Whether you're walking your own pup or calming a noisy neighbor's dog, this device brings results without cruelty. What's Included: 1×Ultrasonic Dog Bark Device, 1×USB-C Charging Cable, 1×User Manual, 1×Wrist Strap, and 1-Year Quality Support. Note: Do not aim directly at humans. Not a toy—keep away from children.