Clix Silent Whistle (Noise sensitive whistle)

This lightweight, compact, "silent" whistle is ideal for dog training, both indoors and out. It is also possible to alter the pitch of the whistle by using the adjustment screw. "Silent" whistles are particularly suited for training noise-sensitive breeds such as Border Collies. It should be noted that this whistle is just audible to the human ear, essential for gauging its efficiency.