1. Good performance: The dog barking collar will start vibrating when the dog barks. If the dog continues to bark, the collar will continue to vibrate for a longer time after each bark until the dog stops barking. 2. Training function: Blow directly into the sensing hole in the middle of the barking collar or imitate barking, and the collar will start vibrating. After training, the dog will know that the vibration is caused by barking. 3. Automatic intelligent mode: The automatic dog barking collar resets to the initial standby mode 30 seconds after the dog stops barking, no matter how many times it works. 4. For your dog: The rechargeable dog barking collar can be used for up to 60 days after charging for 2 hours, and standby for more than 180 days. IP rating, adjustable sensitivity. Suitable for large, medium and small dogs. 5. Intimate design: The dog training collar uses a rechargeable lithium battery and is very durable. The collar is not easily damaged and can be used for a long time.