Feature:1. Indoor/Outdoor Use:Compact and easy to install, with an IPX4 waterproof casing. Perfect for placement anywhere at home or in the yard, including trees, walls, or garden fences. Ideal for all-weather use.2. Intelligent Bark Detection:Equipped with an intelligent recognition chip that identifies over 3000 types of dog barks. Simply switch to the appropriate mode, and the device automatically emits ultrasonic waves to stop excessive barking, helping you control indoor noise levels.3. 50ft Range:The device emits ultrasonic waves up to 50 feet, effectively stopping your dog and neighboring dogs from barking. It creates a quiet and peaceful environment for you and your pets.4. 3 Modes: (20KHz for gentle dogs, 25KHz for medium-sized dogs, 30KHz for small dogs), this anti-barking device for dogs provides a gentle yet effective way to communicate when it's time to be quiet.5. Rechargeable Battery: The rechargeable bark control device has a 2000mAh battery that lasts up to 45 days on a 2-hour charge. It comes with a USB charging cable, compatible with computer ports, portable power banks, and USB adapters.Specification:Material: ABSBattery Capacity: 2000mAhUltrasonic Frequency: 20-30KHzDistance: Approx. 15m / 49.2ftWaterproof: IPX4Size: Approx. 14.8 x 10 x 4.5cm / 5.8 x 3.9 x 1.8inWeight: Approx. 250g / 8.8oz Package List:1 x Dog Barking Stopper1 x Charging Cable1 x User Manual