Easy to use training clicker in any position, fits in the palm of hand. Can be used to train the dog basic obedience, small trick, and correct the bad behavior; Scientific method of training pet safely and easily. Not only train the dog but also the cat, bird, chicken, sheep and even mouse. Must-have training tool for sound-sensitive pets. Well constructed and durable, metal clicker will not rust or break. Big button for easy clicking and loud sound. 2.55" L x 1.29" W