Stronger Bark Control with 3X Ultrasonic Emitters: Unlike single-emitter devices, our upgraded dog bark deterrent —delivering 3X the coverage to quickly stop barking, biting, and jumping behaviors. Ideal for anti barking training, safer than bark collar, more effective than a dog whistle.Works for 97% dogs from 6 months to 8 years without hearing impairments，offers a humane dog training solution 6-in-1 Safe & Humane Training Modes:Our dog bark deterrent device features dual ultrasonic frequencies (fixed 25kHz and variable 20-30kHz), combining 4 ultrasonic modes plus an audible beep and LED flashlight for versatile training. Alternate differents modes adapts to different dogs providing effective bark control without causing pain or distress, humane for daily training or stubborn, persistent barking. Good for training at home or to stop neighbors dog bark that disturbs your peace 23 FT Extended Range & Night Safety: Bark Control Anytime, Anywhere: Stop barking and bad behavior from up to 23 feet away with our powerful dog bark deterrent device — perfect for your yard, neighbor’s yard, outdoor walks, and off-leash areas. The built-in LED flashlight adds safety for evening walks, and low-light training.Best Results Tips:Directional use – aim directly at the dog, in quiet environments Fast Charge & Long Battery Life – Always Ready for Training：With a Type-C fast charging, our dog bark deterrent device reaches a full charge in just 2 hours and provides up to 30 days of regular use on a single charge, along with 180 days of standby time. Whether you're correcting anti barking behavior or training your dog in public places, you’ll always be prepared for any situation. Forget the hassle of frequent charging and enjoy reliable, long-term barks no more support Ultra-Compact Design for Everyday Convenience：50% smaller than standard dog bark deterrent devices, our anti barking device is ultra-compact and lightweight, fitting effortlessly into your pocket, bag, or hand. Whether you're on daily walks, outdoor adventures, or dealing with unexpected situations in public places, this portable design helps you stop barking and encourage good behavior anywhere, anytime. Say goodbye to constant noise and enjoy a barks no more experience with your dog