Features: 1.Ultrasonic Dog Training: You can adjust the tone to get the right frequency, this is an ultrasonic dog whistle that can quickly stop barking and help you teach your dog obedience and learn basic skills like sit, paw, lay down, get up. 2.Safe Dog Whistle: Our dog whistle is made of safe high quality copper, train your dog without any health problems, it will not hurt your dog& 39;s hearing during training. 3.Lanyard: Our dog whistle comes with a lanyard, the lanyard strip is available for you to hang the whistle around your dog& 39;s neck or keep it at hand while training, no more worrying about losing or misplacing the training whistle. 4.Dog Whistle Training Tool: This dog whistle is suitable for any breed of dog. Whether your dog is a Poodle, Border Collie, Retriever, German Shepherd, Bulldog, Terrier, Rottweiler, Dachshund or any other breed, the dog whistle will ensure they stick to the basic skills. 5.After-sales Service: If you have any problem, please contact us immediately, we will help you solve it as soon as possible. Specifications: Product material: High-quality copper + nylon lanyard Whistle size:8*0.7cm Lanyard size: 49cm (including hook) Product weight: 0.027kg Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect. 2.Please allow 1-3cm deviation due to manual measurement. 1 * White Dog Training Whistle 1 * Black Dog Training Whistle 1 * Lanyard or 2 * Black Dog Training Whistle 1 * Lanyard