Product name : Ultrasonic flashlight dog training device Product material: ABS Color: yellow, black Size: 12.5cm * 4cm * 2.5cm Applicable object: dog Function: Expulsion dog, training dog, lighting Battery configuration: 9V Explanation: 1. Dog training: Set the function switch on the bottom of the product to the middle position, and then press the BEAM button switch on the top of the product. 2. Drive the dog: When encountering a dog, turn the function switch to the last position, point it to the dog, and then press the BEAM button switch. Evil dogs will panic or escape. 3. Lighting: Set the function switch to the first position, then press the BEAM button to use it as a flashlight.