Name: Ultrasonic Pet Training Dog Whistle Specifications: total length (including iron ring on the head) 9cm, flute length 8cm The color is black High quality: The dog whistle is made entirely of brass with a chrome coating and can be easily attached to a key ring or leash with the key ring. A good friend of humanity:With this dog whistle , your dog will receive clear signals and commands. Clear communication between you and your dog will be much easier. We will strengthen the relationship between you and your four-legged friends. Easy to Carry: Small and lightweight dog whistle, convenient and easy to carry. Our pipe is made of strong, durable and corrosion-resistant metal. Easy Training: Our dog whistle reliably stops barking and helps learn commands and tricks. Bring your dog obedience and many commands like .Sit, roll over, stop barking, stay and potty training. Ultrasonic Training Whistle: Our dog whistle can reliably stop barking and help you learn commands and techniques. Suitable for sport, hunting, breeding, guide dogs and rescue dogs. Quantity delivered: 2 pieces Note: The data is manual measurement, please allow 1-108cm error, due to differences between light and screen, there will be a certain difference in color, the specific received in kind shall prevail.