Material: The dog whistle is made of high quality 304 stainless steel, stainless, don't worry about the whistle component part falling off and loosening. High Sound: The special and precise design of dog training whistle allows you to make a high sound with only a small amount of effort. Fixed Tone: After the dog adapts the tone, it is not necessary to adjust tone every time, which is very convenient. Application: The professional dog whistle can be used for recall and stop training and pet behavior control. Note: The dog whistle can not immediately control your pet dog, which requires you to train your dog for a period of time. Product Description Features: 1. The dog whistle is made of high quality stainless steel, which is durable and will not rust. 2. Our whistle has a steel ring that can be strung on your keychain for easy portability without worrying about losing it. 3. When blowing the whistle, only a small amount of force is needed to make a high sound. So it's not just a dog whistle, which can also be used as a survival whistle. Specification: Material: 304 Stainless Steel Color: Black and Red Size: Whistle length is 45 mm/1.77 inch, Key ring diameter is 2.3 cm/0.9 inch Package Including: 2 x Dog Whistles