rosewood hondenfluit ultrasoon deluxeThe Rosewood Ultrasonic Deluxe Dog Whistle is a stylish whistle for training your dog; it has a tone that is inaudible to humans. It's ideal for use during training sessions or walks in open areas because the tone carries very far. It's clearly audible to dogs, but not to humans! The whistle comes with two rings and a chain for hanging. Dog whistle that is only audible to dogs Ideal for training or long walks Toon carries very far Equipped with two