【 25KHZ Safe Ultrasonic Sound】This anti-barking device emits high-frequency sound waves to safely and gently deter excessive barking, biting, and other unwanted behaviors—harmless to pets, effective for training 【Triple-Correction Bark Control】Combines ultrasonic + high-frequency flash + smart vibration for versatile training. Perfect for different scenarios and dog temperaments, making it one of the most scientific dog bark deterrent devices available 【Keychain-Sized Ultrasonic Dog Bark Deterrent】 Compact and portable with a clear screen showing battery level and mode. Easy to carry like a dog training clicker, ensuring quick and hassle-free operation 【Anti-Misoperation Design】Prevents unintended triggers, so your stop dog barking device indoor bark silencer works only when you need it 【High-Performance Battery】Fast Charging & Long Battery Life: Charges fully in just 1 hour via USB, keeping your no barking device for dogs ready for extended training sessions 【32ft No-Bark Zone】This stop dog barking device for indoor (and outdoor) use works effectively at a distance，making it a reliable barking dog deterrent to help your pet maintain good behavior Why Choose Our Anti-Barking Device? This bark deterrent device is the ultimate solution to stop barking without shock collars or harsh methods. Whether you need a dog bark deterrent for home, walks, or travel, its advanced technology ensures safe, humane training This advanced dog bark device is a 2025-upgraded indoor & outdoor anti barking device for dogs, combining ultrasonic technology with a training whistle for multi-mode correction. As an effective dog barking deterrent, it safely stops nuisance barking through 25KHZ sound waves, vibration alerts, and an optional whistle tone—ideal for both home use and outdoor training. The portable design features a keychain clip for easy access, USB-C fast charging, and 32ft range, working on all breeds without harmful shocks. Perfect for addressing excessive barking, jumping, or leash-pulling, it's the humane solution recommended by trainers.