Dogs react on high tones. Train your dog on a certain frequency. You can adjust a frequency from 1.000 Hz to 18.000 Hz. Indeed some dog breeds can be trained with various frequencies and execute so different commands. - Support now an Apple Watch App (included or as single App) - New: Additional "click" button for training your dog Technical data: - Frequency from 1.000 Hz to 18.000 Hz adjustable - Volume adjustable - Play, Stop button Use: - At first test some frequencies - Press the play-button - Adjust the volume - Train your dog to that frequency Hints: Use this program carefully. Do not play the tones near children, other pets. Systemrequirements: - iPad, iPhone or iPod Touch with OS 8.0 or higher