Homya Dog Whistle to Stop Barking with Leather Holster - Bark Control for Dogs - Ultrasonic Patrol Sound Repellent Repeller - Silver Training Deterrent Whistle for Pets Cat Pigeon Eagle 1. INDIVIDUALLY TUNABLE - Easy adjustable to multiple frequencies to train your dog commands (like come, sit, stay, etc.) and discipline over either short or long distances. 2. FAR REACHING - Works great for calling dogs from far away! Get your dog's attention right away without straining your vocal voice and drawing attention to yourself by jumping around like a maniac. Specially suitable for all dogs, any age, puppy and adult, Border Collie, Sheep, Hunting, Gun Dogs, Labrador Retriever, German Shepherds, Bulldogs, Beagles, Terriers, Poodles, Boxers, Rottweiler, Dachshunds, Huskies, etc. 3. SMALL AND LIGHTWEIGHT - Only 2 inches long and 0.4 ounces, perfectly to hang on your key ring to have it by your side all time or use it with our included lanyard. Nice looking silver repeller fitting in each pocket. Set includes an additional ID tag as gift for your dog, cat or other pet animal. 4. PACKAGE CONTENT- 1 x Premium High-Pitched Frequency Dog Whistle 1 x High Quality PU CASE for easy keeping. 5. IF YOU HAVE ANY QUESTION, PLEASE CONTACT US, DON'T HESITATE.