Motorola BARK200U Ultrasonic Dog Collar with 3 Levels and Vibration

The Motorola dual sonic no-bark collar offers instant feedback to your dog to discourage excessive barking. The collar senses the vibration produced by your dog's vocal chords when he barks and delivers a one or three second pulse of ultrasonic sound that is outside the range of human hearing. Unlike other deterrents, the collar can only be activated by the dog wearing it. Note: Ultrasonic bark deterrents and remote training products are best suited for dogs that respond well to verbal commands and reprimands. The ultrasonic stimulation will be less effective for difficult, high-drive dogs in highly distracting situations. Ultrasonic stimulation will not work on dogs with deafness or partial hearing loss.