Adjustable Ultrasonic Frequencies Adjustable ultrasonic frequencies allow commands up to 30 meters, enabling you to cue sit, paw, lie down, and stand up with ease. Compact and Flexible Design Small, lightweight device for convenient use anytime, anywhere. Locking nuts and caps keep the whistle secure and ready for use indoors or outdoors. Effortless Training Experiment with different frequencies to observe your dog's response and deliver consistent cues until the desired action is achieved. Positive, Effective Training Tool Helps reinforce good behavior and cultivate obedience, supporting a harmonious relationship with your pet. Suitable for both dogs and cats and effective for teaching behaviors and tricks. Practical Use Scenarios Indoor obedience: cue sit, lie down, or stand up from short to moderate distances inside the home. Outdoor training: maintain focus and improve recall during walks or park visits. Onthego sessions: quick training during grooming, car rides, or travel to reinforce commands.