Description: Do you want to stop your unwanted barking and bad behaviors of your dogs? Well, then why not getting this bark trainer under the principle of ultrasonic sound? When the device detect dog's barking then it emits an ultrasonic sound which can only be heard by the dog and the dog will stop barking. The high-pitched ultrasonic sound that is irksome to dogs and at the same time it is soundless to the human. It is fully harmless and safe to humans and dogs. Come and get one, you gonna love it!!! Features: Made of high quality material, tough and durable. Bright color and stylish design make it a great decor. Waterproof, portable and can be hung on the wall,suitable for indoor use and walking the dog outdoors as well. When the device detect dog's barking then it emits an ultrasonic sound which can only be heard by the dog and the dog will stop barking.The ultrasonic sound's effective range is 5 to 15meters. The high-pitched ultrasonic sound that is irksome to dogs and at the same time it is soundless to the human. It is fully harmless and safe to humans and dogs. With LED light indicator to show red if the device is on working. Specification: Condition: Brand new Material: Plastic Color: Green Battery:9V battery Effective range: 5-15m Size: 10.5 x 5 x 4.5cm / 4.13 x 1.97 x 1.77 inch (Approx.) Package Included: 1 x Bark trainer 2 x Screw 2 x Fixation device 1 x User manual Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.