Product Description: This product is designed to look like an alarm clock, and a luxurious outdoor ultrasonic barker can be hung on a tree, anywhere in the house or in your yard. It can be hung or placed freely on a table or other places. When the luxury outdoor ultrasonic stop barking alarm clock detects excessive barking, the microphone will sense the barking and activate the component. At this point, the product will emit a safe, high pitched ultrasonic sound that dogs can hear, but humans cannot. Dogs will stop barking when stimulated by sound. Because ultrasound can make dogs feel uncomfortable, they will stop barking. Specially designed for outdoor use, the outdoor ultrasonic barker is durable and waterproof. There are three sensitivity levels (effective range from 4.5,9 to 15.24 meters) and one testing level. The outdoor ultrasonic barker has a power indicator that can be set to “Off” to protect the battery when you leave. Product Specifications: Material: ABS Colour: Black Size: 12*9*6.5cm/4.72*3.5*2.56inch Suitable for Dogs: All kinds of dogs Package Included: 1 x Dog Anti Bark Device Notice: 1. Due to manual measurement, please allow an error of 1-3mm. Please make sure you don’t mind before bidding. 2. Due to the differences between different monitors, the picture may not reflect the actual Colour of the item. Hope you have a good shopping! Have a nice day~^-^