Features 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. Specifications: Item Type: Dog Barking Control Device Material: ABS Package List 1 x Dog Barking Control Device Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.