This CICPAP dog bark collar offers 3 training modes and 6 adjustable sensitivity levels for optimal results. With options for beep, vibration, or both, it provides a 100% humane and pet-friendly solution to excessive barking. Plus, it's safe for all dogs with no electric shocks or sharp spikes that can cause harm. Our recommendation is to limit use to 12 hours a day and check your dog's skin daily to avoid irritation. Wait until your dog is at least 6 months old before using this collar and don't worry about other barking dogs setting it off - our advanced technology filters out irrelevant noises. The strap is adjustable up to 27 inches to fit dogs of various sizes, and it's also waterproof for use in any weather. Thanks to the upgraded chip and motion detection technology, false triggering is a thing of the past. The clear color display makes it easy to monitor the collar's status and power level, perfect for use during the day or night.