Durable PC material resists rust and ensures long-lasting use. Suitable for any palm size with easy handling. The training clicker produces a clear, distinct sound with a simple button press. Features a large button for effortless clicking and a loud audible tone. 2-in-1 functional design: press the heart-shaped switch to create a sharp clicking sound or use the built-in whistle to produce high-frequency tones, both with strong sound penetration. Ideal for use in various environments. Compact and portable, it can be conveniently stored in a car, bag, or pocket for quick access during pet training sessions. Use for teaching commands such as sit, come, stand, lie down, and more. Designed for dog training, especially effective when starting with puppies. Suitable for dogs of all sizes and breeds. Promotes interactive behavior training between you and your dog.