Key benefits - Compact dual whistle for training on the go. The set includes a black whistle and a white whistle, and two lanyards to prevent loss. - Safe and durable design for reliable training. The whistle body is stainless steel and rustproof, with an ABS plastic cover to protect the inner structure. A metal key ring allows easy attachment to a free nylon lanyard for secure carry. What’s included and design features - Two whistles: black and white. - Two lanyards to prevent loss. - Metal key ring for hanging on a nylon lanyard. - ABS plastic cover protects the inner mechanism. - Stainless steel construction for sturdiness and rust resistance. Material and safety - Stainless steel body provides strength and rustproof performance. - ABS plastic cover guards the internal components, contributing to safer training sessions. - Includes a metal key ring and a free nylon lanyard for convenient carrying. Compatibility and performance - Suitable for all dog breeds, including labrador, shepherd, rottweiler, dachshund, husky, or other breeds. - Ultrasonic waves are designed to attract your dog’s attention and support obedience and basic behavioral skills. Adjustable frequency - Different dogs respond to different frequencies. The whistle features a nut and a screw that allow you to adjust the frequency by turning. - Test each setting with your dog and use the one that yields the strongest positive response. Practical use scenarios - Outdoor recall training during walks in parks or yards: use the adjustable frequency to capture your dog’s attention and reinforce recall commands. - Home or yard basic training: practice introducing and reinforcing basic commands with a clear, consistent signal. - Training in noisy or distracted environments: use the adjustable frequency to stand out in streets, parks, or busy areas to regain your dog’s focus and compliance.