High Frequency Ultrasonic Directional Bark Stop 20-30kHz sound wave: beyond the range of human hearing, only the dog can sense, through the high-frequency sound wave to stimulate the eardrum, triggering a sense of discomfort, and quickly interrupt the barking within 0.5 seconds. Intelligent Frequency Conversion Design: Avoiding the dog's immunity to a single frequency, the Frequency Conversion/Sweeping Mode makes it difficult for the dog to adapt to it, and the effect is better in long-term use. Precise directionality: Sound waves spread in a directional cone, only affecting dogs within 3 metres of the pointing area, will not interfere with surrounding people or pets, to avoid accidental injury. Super bright LED lighting + body defence function High brightness LED flashlight: provide sufficient lighting when walking your dog at night, and at the same time, it can flash warning to prevent unfamiliar dogs or people from approaching and protect the owner's safety. Three modes switching: lighting, training, repelling with one key switch, meet different scenarios. Safe and portable, easy to operate Non-invasive design: no electric shock, no water spray, avoiding psychological trauma to the dog, puppies and elderly dogs can be used with caution. Lightweight body: handheld design, one-button start, compatible with outdoor dog walking and home scenarios, no need for complex settings, plug and play. Ultra-long battery life: built-in rechargeable lithium battery, fully charged state can be used for weeks, USB charging interface, convenient and quick.Applicable scenarios, essential for pet-raising familiesHome stop barking: when the dog barks due to separation anxiety, stranger visits, etc., one key to stop barking to avoid complaints from neighbours.Night walking: LED lighting provides a clear vision, ultrasonic waves to drive away strange dogs, to protect the owner and dog safety.Outdoor training: Correct the dog's bad behaviours, such as chasing and digging, in parks, countryside and other scenarios.Self-defence tool: when encountering unfriendly dogs or people, LED flashing and ultrasonic deterrent, double guarantee safety.