The main function of the product: In the previous product upgrade, the tedious reset function has been avoided 1. Function: ultrasonic + electric shock + sensitivity adjustment, charging + waterproof. 2. Press and hold for 0.5 seconds to turn on, long press to turn off, 7-speed sensitivity adjustment, 3 indicators are on at the same time, 7 speeds, 1-6 steps, etc. 3. Function key setting, you can turn off one of the functions or work at the same time. In order to select the principle of the ultrasonic function of the product, The sound of dog barking is triggered for the first time. At this time, the working light will automatically light up, 19KHZ ultrasonic output will be emitted, the dog will respond, and the product will automatically reset to the start mode. If the dog does not respond step, it will enter the next function mode. When the dog barks for the second time, the light will automatically light up, 20KHZ ultrasonic wave and the dog will respond, and the product will
