PetSafe - Ultrasonic Bark Control Collar

Gain gentle bark control with the Ultrasonic Bark Collar. When your dog barks the collar emits high-pitched ultrasonic sound. Ultrasonic sound is annoying to your dog but silent to most humans. Collar is included but also fits your favorite collar up 3/4" wide. Included collar is lightweight water resistant and comfortable. Dedicated on/off switch to preserve battery life. Ideal for dogs over 8lbs and neck sizes up to 28". Comes with two 3V Lithium batteries.