Ultrasonic Dog Chaser with 2 Flashlights(Black) 1. Work Principle: -This product is mainly used for outdoor environment to prevent dog attacks. -When you encounter the dog which is trying to attack you,please come up with this super weapons. -This weapon will launch ultrasound immediately to the dog. The excitation of 130dB of ultrasound on a dog's hearing is significant. Super-bright flashing LED's also make the dog clear where the source and location of the weapons is in order to understand what you are against it. The longer stay in this position, the greater the harm to him, which left helter-skelter. 2. Operation Method: -Lighting: Slide the function switch to the Light site , Press the ON button on the top ,the machine can be used as a flashlight. -Training Dogs: Slide the function switch to the Train site , Press the ON button on the top , the machine can be used as a training dogs. -Chasing Dogs: Slide the function switch to the Chaser site,Press the ON button on the top , facing the dogs for a few minutes time .It will chase the dogs away ! 3. Power: 1 x 6F22 9V battery (not included)