This 90MM Ultrasonic Dog Training Whistle is specially designed for all your training needs.
The frequency produced doesn't effect humans due to ultrasonic pitch.
Great for recall over long distances.
Features:
- Adjustable pitch, simply tighten or loosen the screw to work out your dogs frequency.
- It should be noted that this whistle is audible to the human ear, essential for gauging its efficiency.
- Dogs can hear this ultrasonic pitch up to 2 km.
- Made of metal, and key ring loop included.
***A dog training must have***