1. there are 6 seconds time recording function: dog owners can be collected on their pet baby words (6 seconds), when the dog yell, the owner of the machine will be issued before the recording said voice, the dog heard just know master in the command it, so that it can be a more effective training it and change the bad habits in a pet dog.
2. The product can emit ultrasonic sound, gentle sound stimulation on pet dog
3. Retractable elastic tape, suitable for small and medium-sized dog