This ultrasonic dog training device offers a humane solution for managing unwanted canine behaviour. The handheld device emits high-frequency sound waves that are specifically calibrated to deter aggressive or unwanted behaviour in dogs. Featuring multiple operation modes including training and deterrent settings, this compact device is easy to carry and operate with simple button controls. The sleek black design includes dual speakers for effective sound projection and can be used to train pets or prevent unwanted approaches from unfamiliar dogs. Perfect for dog walkers, postal workers, or anyone seeking a non-contact method to maintain safe distances from aggressive animals. The device operates on standard batteries and includes a built-in LED light. It's an invaluable tool for professional trainers and pet owners alike who need a reliable method for behaviour modification and personal protection. Please note that while effective as a training aid, this device should be used responsibly and in accordance with proper pet training guidelines.