Easy to use It is helpful to pets It is the colorful products That is the professional and practical products Non-corroding, shock-resistant design That is durable conducive to long-term use Specifications: Weight: 20g Materials: Plastic Item type: Training clickers Function: Training Cat and Dog Color: white, orange, , black, red, blue, green, light green, sky blue, light blue Specifications: It is helpful to train pets It is the colorful products That is the professional and practical products Non-corroding, shock-resistant design That is durable conducive to long-term use Package Included: 1* Whistle Trainer Notes: Due to the difference between monitors, the pictures may not reflect the actual color of the item. Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Please leaving a message before you give the bad feedback, if the products have some problems. Thanks for your understandings.