Brand NEW Please Note: This item was only opened to take pictures for this listing. The exact items in the 1st 4 pictures is the exact item you will receive. 2 Dog Whistles with Lanyards Stainless Steel Ultrasonic Dog Whistles to Stop Barking High Pitch Frequency Silent Whistle for Dog Training and to Recall Your Dog Dogs respond to different frequencies. These are dog training whistles to make dogs come to you. You can train your dog to listen to different commands in this way. These are professional dog training whistles and you can adjust frequency by a simple turn of the screw rod inward or outward until your dog exhibits the strongest reaction. It is good for teaching your dog obedience and to learn basic skills. These stainless-steel dog whistles to stop barking is made of high-quality material that is durable and fine. They can attract the attention of dogs without damaging their hearing and without any health problem, making it safe for dog training. You can easily train your dog by adjusting different ultrasonic frequencies, such as stop barking, sit, lie down, track, run, potty training and so on by maintaining the consistency of the whistle command. This silent dog whistle is a great tool for you to teach your dog obedience and to learn basic skills so that you don't need to shout out loudly. Your dog can hear the high frequency dog whistle up to 200 meters away without seeing you. See pictures for more item details. Trusted Seller-Fast Ship!