The Sunbeam Sonic Egg SBBCU2 is an ultrasonic anti-barking device designed to deter dogs from barking excessively. With its sonic function, this device emits a high-frequency sound that is uncomfortable for dogs to hear, encouraging them to stop barking. The device is compact and easy to use, making it a convenient tool for pet owners looking to train their dogs to behave more quietly. The Sunbeam brand ensures quality and reliability, making this device a trusted choice for those seeking to improve their dog's obedience.