Automatically adjusts to your dog's temperament starting at lowest level. 6 levels of static correction, progressive correction feature increases correction to next strongest level. Uses vibration sensor to sense for barking, sensor probe cannot be removed or adjusted. Must fit properly, cannot attach leash to collar. Dog should be at least 8 lbs. One center black plastic sensor probe. Manual, video and included.
FREE SHIPPING POLICY. CLICK HERE FOR DETAILS.