Easy to use 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 Specifications: Weight: 20g Materials: Plastic Item type: Training clickers Function: Training Cat and Dog Color: white, orange, pink, 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