Good Quality: High quality eco-friendly dog whistle, the dog whistle is small and lightweight, it comes with premium quality plastic and metal, durable and rust resistant and is tested for safety with your pet of company. The matte surface and non-slip handling are easy to hold. Water droplet shape, suitable for all palm sizes and easy to control. Adjustable Frequency Whistle: The dog whistle can generate various frequencies which can be adjusted by tightening or loosening the screw. You can adjust the height to get the right frequencies, loosen the sound adjustment screw while blowing air from the air inlet, turn the adjustment lever to adjust the optimal height. After the adjustment lever is turned, tighten the sonic adjustment screw. Dog Whistle Reminder: When the dog is 3-7 months old, the training effect is best. Standardized frequency means that whoever uses the Whistle (e.g. Partner, Child), they will always emit the same sound, regardless of their emotional state, prevent interruption of training due to different Whistle frequencies. The long term and same tone Dog Whistle can make the dog adapt better and receive the signal from its Owners better. Anti-lost Design: You will get a pair of matching woven cord straps and our dog whistle, allowing you to easily hang the dog training whistle around your neck to prevent you from losing the whistle. When training dogs, it is more convenient for you to free your hands to interact with the dog. The clicker is designed with a wrist strap for greater portability. It allows you to carry anywhere without worrying about losing them. Application: The dog whistle is suitable for calling dogs, training them to call, lie down and sit, while correcting bad behavior of dogs. dogs. Train your dog with the ultrasonic whistle and clicker so you don't have to shout loudly. Your dog still receives clear signals and commands from up to 25 meters away, even if he can't see you.