Features: 1.WATERPROOF AND DURABLE: Barking box is made of ABS material, waterproof and durable, can withstand all kinds of weather conditions, and is a great choice for dogs to stop barking outdoors. 2.ADJUSTABLE CONTROLS: Anti barking device features adjustable controls and is suitable for small, medium and large dogs. Emits a harmless but effective sound to control excessive barking. 3.NEIGHBORS DOG SILENCER: Dog silencer captures barking in the area covered by the system, solving the problem of excessive barking and stopping your own dog or your neighbor's barking. 4.EASY TO INSTALL: Outdoor ultrasonic bark control is simple to install and easy to suspend from trees, wall or fence posts to add some style to your outdoor decor. 5.ENJOY THE PEACE AND QUIET: Outdoor bark control device is lightweight and has a cute design to keep your family and neighbors enjoy quiet at home and on camping trips. Specification: Item Type: Barking Box Material: ABS Battery Type: 1 x Alkaline Battery Battery Model: 9V Battery (PPP3 Battery) (Shipped Without Battery) PackageList: 1 x BarkingBox 2 x Expansion Tube 2 x Screw 1 x Instruction Manual