• Made of durable ABS plastic • Includes 2 dog whistles, black and red colors • Each whistle comes with a neck lanyard • Comfortable size and easy to carry • Ideal for professional dog training • Allows the dog to respond quickly to commands • Adjustable sound frequency: dogs can hear up to 120 Hertz, people up to 20 Hertz • Improves the relationship and communication with your pet • The package contains 2 dog whistles with their respective lanyards