*S.O. - Up to 2 Week Wait* Company Of Animals - High Frequency Whistle - 8CM (3in)

*S.O. - Up to 2 Week Wait* Company Of Animals - High Frequency Whistle - 8CM (3in) This lightweight, compact, ‘silent’ whistle is ideal for dog training, both indoors and out. The High Frequency Whistle is particularly appropriate for 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.