Feature:1. Effective and Safe: Adopt smart ultra-sonic technology to stop excessive barking without harming your beloved pet. The gentle yet effective ultrasound serves as a communication tool to teach your dog to stay calm.2. 3 Adjustable Modes: Our bark stopper has 3 adjustable modes, you can choose the one that is suitable for your dog according to your dog's specific situation. They cover a scope of 49 feet, ensuring a considerable area.3. Waterproof Design: This dog barking deterrent device has an IP54 waterproof casing to withstand all kinds of bad weather, so you don't have to use the dog barking control devices because of the weather, it is built to last.4. Wide Application: Simple to operate and easy to use, our smart anti-bark device can be easily hung on a tree, garden fence, table, or dog house, and it is very convenient to use on your or your neighbor's barking dog. 5. Rechargeable Deterrent: Built-in 1500mAh rechargeable battery, charged for 4 hours and used for 40 days. Designed with your pet's health in mind, our no-bark device is carefully crafted to be safe and harmless to dogs.Specification:Material: ABSColor: BlackBattery: 1500mAh, 3.7VCharging Time: 4hours, 5V/1AItem Size: 12.3 * 8 * 3.5cm/4.84 * 3.15 * 1.38inPackage Size: 13 * 9.2 * 5.6cm/5.12 * 3.62 * 2.2inPackage Weight: 180g/6.35ozPackage List:1*Anti-Barking Devices4*Installation Accessories1*Charging Cable1*Manual