General Description A+ Trainer is committed to studying the behavioral psychology of dogs and improving communication between humans and their canine companions. Through extensive research, we have developed various dog accessories, including the automatic anti-bark collar. This product provides a gentle and effective method for dog training, appreciated by many users around the world. Technical Specifications Electric Anti-Bark Collar Gentle Training Method Ergonomic Design Compatibility and Accessories Suitable for all types of dogs Accessories available: Star Collar, Classic Collar, Pretty Paws Collar, Classic Collar-2, Dog Bone Collar Installation Easy to put on Instructions provided for quick use Usage Ideal for training dogs that bark excessively Recommended for gradual use