Pet trainer is compact and lightweight, easy to carry and can be stored in a bag. It comes with an elastic band that allows you to wear it on your finger. There is a button on the dog training clicker, when you press it, it has a clicking sound, you can train your pet to do the right thing according to the right command, and then give them the appropriate reward. It is constructed of plastic material. The length of this product is 7cm, the width is 3.5cm and the height is 1.5cm. Pet trainer is suitable for cats, dogs, and other pets. Item Name: Dog Training Clicker Material: Plastic Features: Small, Durable, Practical, Wide Application Size Details: Size: 7cm x 3.5cm/2.76" x 1.38" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Dog Training Clicker