MBUYGYUO 2 Pcs Ultrasonic Training Whistle Dog for Recall with Strap Puppy Adjustable Stop Barking Whistles High Pitch Frequencies to

Package Includes: You will receive 2 high pitch frequency dog whistles and 2 pieces of black string. Material: This dog whistle with lanyard is made of copper and the black cord is made of nylon. Unique sound: Our dog recall whistle is tuned to ultrasonic frequencies and tones that are inaudible to the human ear, so it will not disturb your surroundings. Distinct sound: Our dog recall whistle is tuned to ultrasonic frequencies and tones that are inaudible to the human ear, so it will not disturb your surroundings. Convenient to carry: The Ultrasonic Copper Core Dog Whistle is small and lightweight. You can carry it on your key chain or in your pocket. Focus on training and let this lightweight dog training whistle become part of you. Adjustable frequency whistle: The dog training whistle will not harm your dog's hearing and can be adjusted to a variety of frequencies, ideal for teaching your dog to obey commands and learn basic skills such as sit, come, stop barking, stay in place etc. so you don't need to shout.