["Description:\nbrand new and high quality\nFeatures:\nSilent dog whistle with adjustable frequency to suit your dogs hearing\nAlmost inaudible to humans. Great training aid, the whistle can be heard by dogs up to 400 yards.\nTo adjust the frequency screw the bottom of the whistle away from the top and then lock the position in place with a small screw driver.\n\nSpecification:\nType: Dog Whistle\nMaterial: Copper\nApplications: Pet Training and Behaviour Recall \nFeatures: Dog Whistle, Ultrasonic, Tools， Recall Aid, Adjustable, Training, Pet Supplies\nDimension: app.10+23cm/3.94+9.06in\nColor: Silver\nQuantity: 1 Pc\n\nNote: \n1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\n2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage includes:\n1 Pc x Dog Whistle"]