PetSafe Ultrasonic Bark Control

PetSafe Ultrasonic Bark Control The PetSafe® Ultrasonic Bark Control effectively deters barking when it is worn. When the microphone picks up the sound of your dog's bark, the unit emits an ultrasonic tone that can be heard by your dog, but is silent to most humans. Startled by the high-pitched tone, the dog should stop barking, as it will associate its bark with this unpleasant noise. Automatic Shut Off Automatic Safety Shut-Off Bark Detection Type Microphone detects bark Batteries Uses 2 x 3 Volt lithium batteries (included) Battery Lasts Battery usually lasts 1-3 months Collar Size Fits neck sizes up to 68.6 cm Waterproof System Includes Bark Control unit Adjustable Nylon Collar Two 3-Volt Lithium CR2032 Batteries Operating Guide (EN)