Pc Material Won'T Rust and Durable. Suitable for Any Size of The Palm and Easy To Control. The Training Clicker Will Have The Clear Sound After Pressing The Button Easily. Big Button for Easy Clicking and Loud Sound. 2 In 1 Functional Design. Press The Heart-Shaped Switch With Your Hand To Make A Loud Clicking Sound. Whistling With Your Mouth Produces High-Frequency Sounds. All With Excellent Penetrating Power. This Ensures That It Can Be Used In Different Environments. It Is Convenient To Carry and Store. You Can Place It In Car. Bag and Pocket To Obtain It Easily When You Need To Train Your Pets. Train To Sit. Come. Stand. Lie Down and Many More. Designed for Dog Training. Start Them Off When Puppies. Suitable for All Dogs. Interactive Behavior Training Between You and Your Dog.