It is easy to change the frequency on the Professional Dog Training Whistle, simply separate the 2 parts of the whistle, rotate it to adjust the frequency and fasten both parts together.

Recall Training- Dog training whistles are ideal for recall training as they help standardize commands and are really useful if different people are training or walking the same dog. Extremely lightweight and compact in design, the Professional Dog Training Whistle can easily be placed in a pocket or grooming bag to ensure you always have it to hand. The attractive lanyard is fully adjustable so you can secure to the desired length and is also reflective!