Product description: Material: ABS stainless steel. Flute length: 9 cm total length (including iron ring on the head). The length of the flute is 8 cm. The rope is approx. 42cm long Colors: Black Package includes: 3 pieces dog whistles with necklaces Description: Adjustable frequency whistle The dog whistles do not damage your dog's hearing. Adjustable to multiple frequencies, good for learning your dog's obedience and basic skills High Grade Dag Whistle Our dog whistle is made of high quality stainless steel, 100% safe, strong and durable. The ultrasonic dog whistles do not affect your dogs' hearing. Very suitable for training dogs. Ultrasonic training whistle Our dog whistle reliably stops barking and helps you learn commands and tricks. Suitable for sports, hunting, herding, guide dogs and rescue dog work. Whistle with a clear voice With this dog whistle, your dog receives clear signals and commands. The whistle can drown out a lot of noise (e.g., noise from motorways and construction sites). Makes clear communication between you and the dog much easier. Easy to use By adjusting the nut and the adjustment lever for sounds of different frequencies, you can watch the dog's reaction to each sound for better training, the dog clicker is ready for training immediately. Our set is small and guarantees comfortable handling.