product description ：
Quantity : 1PC
Type : Trainning Whistles
Color : As Picture Shown
Material : Stainless Steel;Plastic
Size : 8CM
Features :
-This Dog Training Whistle is designed for dog training, the frequency produced isn't of effect on person, but very useful for dogs, it will sit up, come here, eat, sit down etc.
-Great for recall over long distances
-Key ring loop is included
-Please be aware of this fact they are not totally silent.