Features: Professional Dog Training: This professional dog training flutes makes it easy to trains your dog/puppy with unlimited commands such as stop barking, sits, lay down, remembers, potty training, huntings training and more. No need to harm your pet by using electric shocks or other ineffective training methods. AdjustableS Frequency: Easy to operate, just loosen the sound adjustment screw and turn the adjustment-lever to get the desired ultrasonic frequency. This is a dog-whistle that quickly stops barking and helps you teach your dog obedience and learn basic-skills. Safety Dog-Whistle: This dog-whistle is made of safe and sturdy stainless steel. The ultrasonic waves from the dog-whistle will not damage your dogs hearing during training and will not cause any health problems for your dog. This recall ultrasonic dog-whistle is suitable for training all breeds of dogs. Loss-proof Designn with free lanyard: You can take the Silents Dog-Whistle anywhere without worrying about losing it. Its a dog-whistle-tracker that prevents your dog from getting lost! Enjoy Training Time: Your pet can hear the dog-whistle from 25 meters! Complete freedom-of training for poodles, sheep, rottweilers, huskies and other breeds. The dog-whistle ensures they basic-skills such as sits, paw, lay down and get up. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Description: Material: environmentally friendly plastic + metal + nylon lanyard Size: Training-Whistle: 8*0.7cm; lanyard: 49cm (including hook)