Product use: dog repelling and training Colour:As Shown Material:ABS Product function description: 1.The OFF/ON button on the right is the power button; when the power is turned on, it vibrates once to remind you to turn on the machine, the unlock stays on, and the battery indicator light is displayed; when it is turned off, it vibrates once to remind you to turn off the machine, and the screen displays (it will automatically go out after 3 seconds); 2.After turning on the machine, long press the fixed frequency button to start the fixed frequency operation , the screen stays on; and it vibrates intermittently to remind you; after releasing the fixed frequency switch, the vibration stops and the goes out; 3 , When you long press the sweep button , the sweep is on , the flash indicator is on, the intermittent vibration prompts, and the two front F5 lamp beads start flashing; 4.Press the lighting button once for the long-light mode, press twice for the flash mode, and press three times to turn off 5.When charging, the charging mark is red, and the green light is on when it is full; when the power is low, the red light flashes to prompt Precautions: 1.The product uses the ultrasonic working principle, and the effect on different dog types varies; 2.The product light is strong, please do not look directly into human eyes; Package Contents: 1 x Anti Barking Device 1 x Charging Cable 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing The measurement allowed error is +/- 1-3cm.