This obedience whistle is an tool for gaining your pet’s cooperation through positive reinforcements. By producing an , interesting sound you gain your ’s attention and get him to do , rather than attempting to break a bad habit through harsh means. Features - Colour: Silver. - Material: Stainless Steel and Copper. - Size: About 10 - You can adjust the frequency rod of your whistle to find the pitch that your best responds to. - This obedience whistle is an tool for gaining your pet’s cooperation through positive reinforcements. - By producing an , interesting sound you gain your ’s attention and get him to do , rather than attempting to break a bad habit through harsh means. - With our obedience whistle you will deliver consistent , in a high frequency range that is inaudible to human ears. - Using a whistle is the safe, humane alternative to , and can be used to distract or aggressive strays. Package list: 1 x Whistle