1. Safe barking device: The anti barking device adopts high pitch technology, which is harmless to pets above the range of human hearing, but will not attract the dog's attention and will not be subjected to painful stimulation. 2. Adjustable mode: The dog barking prevention device has 3 adjustable distance levels for different monitoring distances, designed to provide multiple options to meet your training needs and prevent your dog barking. 3. Effective range: The ultrasonic device that stops dogs barking can be hung on trees, indoor, outdoor walls, or fence posts to prevent dogs barking and reduce excessive barking within the auditory range. 4. Waterproof bark control device: The barking control device adopts IPX4 waterproof material, and the lifting rope design is suitable for indoor and outdoor use under any weather conditions. 5. Rechargeable: The product is equipped with a 1500mA rechargeable battery. Our indoor anti barking device adopts advanced technology, ultra quiet and low vibration, protecting your pet from fear, reducing the risk of excessive pinching, and making your pet feel good. Norms Material: ABS Color: White Dimensions: 3.5 x 3.5 x 2.4 inches Weight: 190 g Battery capacity: 1500mAh Waterproof: IPX4 The package includes:1 Dog barking control device1 cable charger