Design: With the latest technology, the dog trainer can help you correct your dog’s bad behavior and stop barking. Also, you can train your pet to be obedient Easy to use: The sound is only heard by pets, they are easy to use and work well Handheld and convenient: portable and portable, also convenient to carry to any place you like, such as jogging or running, cycling , parking etc. Multi functions: Except as a pet training tool, it can also protect you from dog attack, suitable for training many kinds of dogs, such as: B. Pets, dogs in police and shepherds, suitable for outdoor work, travel and security night patrol