Feature: 1. DURABLE MATERIAL: Dog bark deterrent is made of premium ABS material, the shell is sturdy and durable, with excellent characteristics such as high abrasion resistance, high toughness and high strength. 2. COMPACT AND PORTABLE: Dog chaser is small and portable, easy to carry and use anytime, anywhere, it can be put in your pocket or bag, no matter in outdoor, traveling and other situations, you can use it at any time. 3. MULTIFUNCTIONAL: Dog barking control device not only prevents the dog from chasing you and creating danger, it can also train your pet 4. ULTRASONIC TECHNOLOGY: Anti barking device adopts ultrasonic technology, it will produce super strong ultrasonic waves to repel dogs. 5. DOUBLE SPEAKERS: Dog barking control device adopts double speaker design, the ultrasonic waves are stronger and the dispersal force is stronger. Specification: Item Type: Dog Barking Control Device Material: ABS Battery Required: 9V Battery (Shipped Without Battery) Color: Black. Package List: 1 x Dog Barking Control Device1 x English Manual