Would you like to train your dog to be smarter? A dog training whistle can be an effective tool for teaching your dog to follow your commands￡? such as calling him to you￡? sitting or going in a new direction. Here we provide you with dog training whistle. The whistle can produce ultra-sonic sound that is easier for dog to hear. It takes a little bit of time￡? patience and practice￡? but your dog will learn to obey you through various whistle commands. Features It is a safe and highly efficient product for pet educationSuper light weight gadget is very comfortable for dogs Adjustable pitchKey ring loop included Adjustable pitch￡? simply tighten or loosen the screw to work out your dogs frequencyIt should be noted that this whistle is audible to the human ear￡? essential for gauging its efficiency. Instructions included with each WhistleNew in the Package Specifications Finish / Material Copper / chrome plated finish <br>Color Silver <br>Length 5cm<br> Package Includes 1 x Dog Training Whistle Ultrasonic Sound Ultra Sonic Extra Info Note: The dog whistle sound includes 2 parts. <br>Part 1: the Ultrasonic. Human??s ear can not hear it￡? but dog can hear it. <br>Part 2: These light sound can be heard by human￡? which help owner sound a long or short whistle to train them. 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.Some tips to use the dog whistle: <br>1?￠Adjust the pitch !#!amp!*! blow the whistle to your dog. Even dogs can??t hear all frequencies. Wait until he is asleep and gently blow on the whistle. Your whistle has a nut and screw that adjust the frequency when turned. Continue testing until your dog perks up. You will then know you have reached a frequency he can hear. <br>2?￠Use the dog whistle with varying sequences to train your dog. For example￡? one long burst can mean "come"￡? while a series of short￡? staccato bursts might mean "sit". <br>3?￠Keep your whistle commands consistent and your dog will always know what you expect of him. The dog??s behavior according to your instruction need to be trained. Such as￡? at meal time￡? blow on the whistle before they get the food. It will only take a few times of doing this and your dog will react quickly