The HouDeOS Anti Barking Device for Dogs is a high-quality ultrasonic stopper designed to curb excessive barking in dogs. With 3 modes of operation, this device offers customizable settings to effectively train dogs to stop barking. The rechargeable battery and weatherproof design make it convenient for use in any environment. The wall mount feature allows for easy placement in your home to provide a peaceful atmosphere for both you and your furry companion. Made in China, this model (K4) is a reliable solution for dog owners looking to improve their pet's behavior.