for Training Pet Puppy Dog Whistle Supersonic Obedience Sound Pet Dog Dog Whistles Ultrasonic

Label:Yes Item Name: Ultrasonic Dog Whistle Included:1 x Ultrasonic Dog Whistle Size: length 9cm, Width 0.8cm Material: High-quality copper + plastic Function: Training dogs Color: Silver + Black Usage : 1: Unplug the whistle black shell 2: loosen the sound adjustment screw, rotate the outside adjustment lever, adjust to the best volume 3: after adjustment is completed, tighten the adjustment screw fixation

Note: The dog Whistle is an ultrasonic wave, it may sound small, but the dog can hear very clearly。It's easy to train dog