90mm Pet Dog Training Adjustable Whistle Pitch UltraSonic Sound Black

90mm Pet Dog Training Adjustable Whistle Pitch UltraSonic Sound Black   Features:   Designed for dog training, the frequency produced isn't of effect on person, but very useful for dogs, it will sit up, come here, eat, sit down etc… A plastic sleeve protects the adjustment area Great for recall over long distances Key ring loop included   Specification:   Material: Metal & Plastic Length: 90mm(3.54") Weight: 14g   Package Included:   1 X Dog Training Whistle   Note:   1.Duetothelightandscreendifference,theitem'scolormaybeslightlydifferentfromthepictures. Pleaseunderstand.Makesureyoudon'tmindbeforeyoubid. 2.Pleaseallow1-5mmdifferencesduetomanualmeasurement.