Features: Experience peace and quiet with our advanced dog barking control device, featuring ultrasonic technologies to deter barking effectively up to 55 feet away. Designing as a weatherproof solution, this antibarking device boasts double ultrasonic speakers, ensuring strong antibark effect. For dog owners seek a humanes way to train their pet or neighbor look to address nuisance barking without confrontation. Perfects for both outdoor and indoor environment, our bark control device can be placing in your yard, hung on a fence, or used inside to maintain tranquility in any setting. The usb rechargeable bark deterrents not only adds aesthetic value to your space but also promotes a harmonious relationship between you, your dog, and the community. Specifications: Component:ABS Size:Approx.11x9cm/4.33x3.54inch Maximumly effective distance: 55 feet 1500mA rechargeable battery Package Includes: 1Set Dog Bark Deterrents Device note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. ②.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.