4-Piece Pet Training SetThis handy set includes everything you need for a complete and rewarding pet training experience, including: 1 x dog whistles for reminder, 1 x ratchets for dog training, 1 x x Convenient nylon lanyard for carrying, 1 x Elastic lanyard for carrying. Effective Pet TrainingThe dog training whistle with clicker helps your dog learn all kinds of useful commands, including s sit, search, lie down, roll over, shake your paws and more. These training tools are incredibly useful for correcting bad behavior, excessive barking or over-excitement. Adjustable FrequencyThe booster dog training whistle has been meticulously created to produce different frequencies so you can easily train your pet with unlimited commands. Small in size, the clicker is very convenient to carry, easy to use in any position, the large button allows for effective clicking, plus its sound is loud enough and quite suitable for the hearing frequency of animals without scaring them. br>Safety FirstThis dog whistle to stop barking and biting uses high frequency ultrasonic technology which is adjustable according to your dog's needs, being 100% safe, harmless to pets and pets. humans. Easy to carryThe soundboard has an elastic spiral telephone line, and the other end is a key ring to prevent losing, and the lanyard can also prevent loss of whistle. The dog training whistle and lanyard is convenient for freeing your hands and interacting with the dog during training.