[Easy to Use]: This dog training whistle offers simplicity and versatility. Utilizing various flute methods, you can issue commands like "Do not move," "Sit down," and "Come." For example, you might use "Do not move" with two short sounds or "Sit down" with one long and one short sound. Adjust the ultrasonic frequencies to teach your dog an array of commands. Consistency in using the whistle commands is key, and rewarding your dog with a snack for obeying instructions will help foster obedience and attentive behavior. [Adjustable Dog Whistle]: Different dogs respond to different frequencies, and this dog training whistle addresses that variability. It features a nut and screw mechanism for frequency adjustment. Observe your dog's reactions to each setting and select the frequency that elicits the strongest response. [Effective Dog Training]: Your pet can hear the dog whistle up to 25 meters away, making it an effective tool for training even when they can't see you. Train your dog to follow commands like sit, paw, lay down, up, and heal. [Safety]: Crafted from stainless steel and equipped with a protective lid, this dog whistle is designed for durability and safety. You can easily wear it around your neck using the included black lanyard. [Note]: It's important to understand that this dog training whistle won't make your dog instantly understand your commands. Successful training may require multiple sessions to achieve obedience. Use a rewarding and positive reinforcement approach to build a strong bond with your dog. The training effect tends to be better when the dog is between 3 to 7 months old.