1. The Barkshield Pro Bark Shield Anti Barking Device for Dogs: Correct Unwanted Behaviours Up to 3x Faster. The BarkShield Pro uses advanced technology to interrupt the Bark Reflex Loop—helping you modify your dog's behaviour in a fraction of the time. for puppies and stubborn adult dogs alike. 2. Three adjustable modes for training: the Dog Bark Deterrent Device offers three distinct modes to help with your dog's training. Each mode can be used to address specific behaviors such as excessive barking, digging, biting, or jumping, ensuring a gentle approach. 3. Ergonomic design and safe materials: made from robust ABS material, it is both lightweight and sturdy. The ergonomic design makes it easy to hold and its compact size makes it easy to carry in your pocket, bag or car. 4. Easy to use and longlasting battery life: it's simple to use, just see your barking dog and press the button. When your dog stops barking, praise them. Repeat the process. Enjoy the benefits of extended battery life with Portable Dog Training Device, providing up to 30 days of use on a single 45minute charge.