Name: Ultrasonic Pet Training Dog Whistle Specifications: total length (including the iron ring on the head) 9cm, flute length 8cm The black color 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 mankind: 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 stop barking. bark reliably and help you learn commands and techniques. Suitable for sport, hunting, herding, guide dogs and rescue dogs. Quantity delivered: 2 pieces