3.4x faster behavior correction with SilentSync Technology Bark guard Pro taps into your dog's natural sensory triggers to interrupt the barking reflex loop, helping to break habits like barking, chewing and chasing more quickly. This can lead to a calmer, more polite dog in minutes a day. Customizable training with three modes Three modes tackle different behaviors, including excessive barking, digging, biting, and jumping. Choose the mode that fits your dog's needs for effective, gentle, and personalized training that corrects bad behavior. Built-in LED for night walks An integrated LED flashlight lights your path for safer night walks. The device also offers two ultrasonic modes, fixed frequency and sweep frequency, suitable for different dog breeds. 50 ft coverage and fast USB charging Coverage up to 50 feet ensures effective behavior correction at a distance. The Bark guard Pro is powered by an 800mAh rechargeable battery, capable of up to 30 days of use on a 45-minute charge. It does not require constant charging, reducing battery concerns during outdoor activities.