Premium Material: Crafted from durable 304 stainless steel, our dog whistle ensures longevity and reliability in training session. The high-quality construction guarantees a safe and effective tool for communicating with your furry companion.Customized Training: Tailor the whistle's frequency to suit your dog's unique response with the adjustable nut and screw feature. Experiment with different settings to find the optimal frequency that elicits the desired behavior, enhancing the training experience for both you and your pet.Behavior Correction: Tired of incessant barking? Our ultrasonic dog whistle offers a humane solution to correct unwanted behavior. Emitting gentle yet persuasive ultrasonic frequencies, it captures your dog's attention swiftly, promoting a quieter and more harmonious environment.Long-Distance Control: Harness the power of remote command with a reach of up to 1000 meters. Train your dog effortlessly from a distance, enabling seamless communication and obedience even when your furry friend is out of eyes. Achieve commands like sit, paw, lie down, get up, or heal with precision and ease.Universal Compatibility: Designed to cater to all dog breeds, from Labradors to German Shepherds, our silent whistle is versatile and effective across various sizes and temperaments. Item Name: Dog WhistleMaterial: MetalFeatures: Behavior Correction, Portable, Long-Distance ControlSize Details:Total Length: 8cm/3.15" (Approx.)Diameter: 0.8cm/0.31" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:Black,White,Blue,Orange,Red:1 x Dog Whistle1 x LanyardorBlack White:2 x Dog Whistle2 x Lanyard