1ONE BUTTON OPERATION: Ultrasonic bark control device emits ultrasonic waves at the touch of a button, making it unbearable for dogs and cats to approach and feel unsuitable to leave. 2ULTRASONIC DOG REPELLENT: Dog bark control device uses a fast flash and ultrasonic wave to repel dogs, easy to carry, mainly used to prevent dog attacks when going out. 3PRODUCES STRONG STIMULATION: Anti barking device can produce strong stimulation to dogs and cats (human ears will not hear) for animals will produce uncomfortable and unbearable interference. 4FLASHLIGHT DESIGN: Ultrasonic dog barking deterrent with flashlight design, the night can be used for lighting, convenient and easy, safer to go out. 5FLAME RETARDANT MATERIAL: Bark control device is made of ABS plus flame retardant material, high temperature resistance, precise fusion, to ensure that the product in the normal work.