Feature: 1. ULTRASONIC TECHNOLOGY: Anti barking device adopts ultrasonic technology, it will produce super strong ultrasonic waves to repel dogs. 2. DOUBLE SPEAKERS: Dog barking control device adopts double speaker design, the ultrasonic waves are stronger and the dispersal force is stronger. 3. LASER DESIGN: Dog barking deterrent device adopts laser design, the laser rays stimulate the dog's eyes and scare away the dog. 4. MULTI SCENE APPLICATION: Dog barking deterrent can scare away vicious dogs, stop close, and also train dogs to stop barking. 5. COMPACT DESIGN: Dog bark stopper is small in size and light in weight, does not take up much space, suitable for carrying and using. Specification: Item Type: Dog Barking Control Device Material: ABS. Package List: 1 x Dog Barking Control Device