Feature: 1. ONE 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. 2. ULTRASONIC 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. 3. PRODUCES 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. 4. FLASHLIGHT DESIGN: Ultrasonic dog barking deterrent with flashlight design, the night can be used for lighting, convenient and easy, safer to go out. 5. FLAME 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. Specification: Item Type: Ultrasonic Bark Control Device Material: ABS Battery: 9V Salty Dry Battery (Not Included) Gross Weight: 57g/2.0oz. Package List: 1 x Ultrasonic Bark Control Device (Battery is Not Included) 1 x Instruction Book Note: Usually it is best not to take the dog repeller intentionally tease the dog, because the dog will not be surprised to hear more. When the light in the dog repellent gear is obviously dim, you should replace the battery in time