Train Your Dog Efficiently: Now, You can use different flute methods to specify the commands such as “Don’t move”, “Sit down” and “Come here”. For Instance; “Don’t move” (Two short sounds) “Sit down” (One long and One short). You can easily teach your dog unlimited commands by adjusting the different ultrasonic frequencies. Please keep your whistle command consistent, when your dog does it right, give him a snack as a reward. Professional Dog Training: You can adjust the pitch to get the right frequencies, loosen the sonic adjustment screw while blowing the air in from the air inlet, turn the adjustment lever to adjust to the optimum pitch. After the adjustment lever is turned, tighten the sonic adjustment screw. This is an ultrasonic dog whistle that quickly stops barking and helps you teach your dog obedience and learn basic skills, like sit, paw, lay down, up. Anti-loss Cover & Adjustable Frequency: Our silent dog training whistles come with a high-quality lanyard and special lock nut & cover. It allows you to take this dog whistle to anywhere without worrying about losing them. Issue commands and gets in touch with your dog whenever needed. Proprietary precision grinding results in a finer frequency range, which is why Simply Natural includes a frequency lock so you never lose your dog’s perfect pitch. Safe & Ultrasonic Whistle: Yes, it’s a fact. Our 3rd-party tested and safety inspected Dog Whistle with 49cm lanyard. The ultrasonic waves from the dog whistle will not damage your dog’s hearing during training and will not cause any health problems for your dog. This dog whistles that makes dogs stop barking can be used on any common breed of dog. The ultrasonic frequencies blown by this whistle will not damage the dog’s hearing. Suitable for All Dogs: The sound frequency of the silent dog whistle is suitable for all dogs. Like teddy, golden retriever, Labrador, Scottish dog, collie and so on. You can use this whistle to train them. We’ve developed a better dog whistle to stop barking and help train your dog. More frequencies mean better results for any pooch, at any age.