Come in 2 pack button clickers with wrist strap in 2 different colors:Black, blue | Can be used to train the dog basic obedience, small trick, and correct the bad behavior; Scientific method of training your pet safely and easily. | Stop barking and dog obdeience. Train your dog quiqly just by simply pressing the clicker and command. | Well constructed and durable, metal clicker will not rust or break. | Big button for easy clicking and loud sound. Easy to use in any position.