Portable Design - Compact size:6*4*2cm. Cute water droplet shape with elastic wrist strap, easy for you to carry around. Ergonomic design with big button makes it easy to press. Built-in stainless steel clicker element can stand up to pressing up to 10,000 times, durable and rust proof. Clicker training is a fun, reward-based method of dog training. It can be used to help your pet learn basic obedience and correct his or her bad behavior. Do not forget to give your pet treats when they do something successfully. Your pet will definitely fall in love with the clicker's sound.