The D&C PAWS Durable Metal 2-Tone Flute Stop Barking Ultrasonic Sound Repeller and Cat Training Keychain Dog Whistle is a versatile and durable training tool for both dogs and cats. Crafted from durable metal, it offers long-lasting performance and resistance to wear and tear. The unique 2-tone flute design allows for the production of distinct sounds with different pitches, providing versatility in training and communication. This whistle emits an ultrasonic sound that effectively stops barking and corrects undesirable behaviors in dogs, capturing their attention. It also serves as a cat training tool, making it suitable for a variety of pet training needs. The sleek silver finish adds a stylish touch to its functionality, making it an attractive and practical accessory for pet training.