This is a pack of 4pcs pet training clickers which are made of premium material for durable and long lasting use. The sound is loud enough and more suitable for the hearing frequency of pets without scaring your noise sensitive pets. The elastic ring on the back can secure the clicker on your finger firmly. And the humane design make it very handy and comfy. It can help train dog basic obedience and tricks instead of dog bark collar, while correcting bad behavior. Great gift for your pets._x000D__x000D_Feature_x000D__x000D_- Color: Yellow, red, blue and black._x000D_- Material: Plastic._x000D_- Size: About 20.5 x 3.5 x 3cm._x000D_- The pet training clicker is designed more scientific and professional. The sound is loud enough and more suitable for the hearing frequency of pets without scaring your noise sensitive pets._x000D_- Humane Design: The elastic ring on the back can secure the clicker on your finger firmly. And the humane design make it very handy and comfy._x000D_- Button presses easily and comes right back up without getting stuck, good sound, not to loud or soft._x000D_- Effective Training Tool: The dog training clicker help train dog basic obedience and tricks instead of dog bark collar, while correcting bad behavior. Training like stop barking, sit, fetch, shake, lie down, and roll over.Packing list:4 x Pet Cat Dog Training Clicker Kit Exclusive Training Humanized Scientific Professional Design Pet Tool Set with Wrist Strap and Elastic Ring