1. Metal material: Made of metal, it has good durability and anti- performance. 2. Call and recall function: The flute can emit specific sound signals to call or recall the dog, which helps train the dog to build the ability to follow instructions. 3. Suitable for large, medium and small dogs: Whether it is large, medium or small dogs, this dog training flute is suitable for training. 4. Small and portable: Small and light, easy to carry, and can be trained anytime, anywhere. 5. Adjustable pitch: The pitch of the flute can be adjusted as needed to suit different dog breeds and training requirements. Colour:As Shown Material:Metal Package Contents: 6 * dog whistle Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.