✅【DOG WHISTLE TO STOP BARKING】Train your dog with the ultrasonic whistle and clicker, you don't have to yell at your dog any more. Every people can train their dogs easily and quickly. Adjustable frequencies to training your dog to stop barking, make dog come to you, politics, sit, lay down, stay and for call. ✅【ADJUSTABLE SAFETY DOG WHISTLE】The ultrasonic dog whistle frequency is 5.4KHz to 12.8KHz, you can adjust dog whistle to find the perfect frequency for your dog . It won't hurt your dogs’ hearing so you can train your dogs more effectively and harmless. ✅【PREMIUM QUALITY DOG WHISTLE】Our dog whistle is made of heavy duty metal, and designed with compact size, excellent texture, 100% safety, long lasting and rust proof. Also, our dog whistle will comes with premium quality lanyard in black for anti-loss, and convenient carrying. ✅【THE BEST TIME TO TRAIN YOUR DOGS】Please note that this ultrasonic whistle wouldn't make your dog understand your instructions immediately. You are supposed to train your dog to do so. When the dog is 3 to 7 months old the training effect is the best. ✅【100% SATISFACTION FOR YOUR DOG WHISTLE】100% money back guarantee! If you aren't 100% satisfied with your ultrasonic whistle, please contact us, we will make a replacement or refund the FULL money to you.