Ultrasonic Pet Training Dog Whistle Specifications: Total length (including the iron ring on the head) 9cm, flute length 8cm Color: 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 included ring. Reliable Communication: This dog whistle provides clear signals and commands for your dog. Improve communication with your pet and strengthen your bond with your four-legged companion. Portable Design: Small and lightweight, this dog whistle is convenient to carry. Made from strong, durable, and corrosion-resistant metal. Effective Training Tool: Helps stop unwanted barking and supports command training. Train your dog to follow instructions such as Sit, Roll Over, Stay, and other basic commands. Ultrasonic Functionality: Emits a consistent ultrasonic tone ideal for training dogs in various activities including obedience, hunting, herding, and rescue work. Package Includes: 2 pieces