A dog training whistle that uses ultrasonic signals to reinforce commands and guide your dog. It helps you call your dog, have him sit, or steer him in a new direction with clear, consistent cues. How it works - The whistle emits signals that dogs learn as commands. Once trained, your dog responds reliably to the cues without needing loud voices. - Different signal patterns convey different commands. A long blast can mean come, while a sequence of short blasts can mean sit. You can vary patterns to represent other actions as needed. Ultrasonic advantage - The device uses frequencies that are largely inaudible to humans but clearly heard by dogs, enabling effective cues at a distance without disturbing others. Key benefits - Improves training consistency and reduces the need to shout. - Enables silent, immediate communication in parks, crowds, or public areas. - Supports recall, sit, and directional control as part of a standard training routine. Use scenarios - Park or open field recall: call your dog from afar without raising your voice. - Hiking or off-leash training: guide your dog to follow or change direction at trail junctions. - Public or crowded settings: give quiet cues for come or sit, keeping training calm and controlled. Design and compatibility - Lightweight and portable for easy carrying during training sessions. - Designed to work with conventional dog training methods and routines. - No special equipment required beyond standard training practice.