The main function of the product: In the previous product upgrade, the tedious reset function has been avoided 1. Function: Sound Warning + Vibration + 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. You can choose the principle of the product vibration function: The first barking trigger, sound warning . The second trigger bark, warning sound. The third trigger bark, warning sound + 1 second vibration. 4th trigger bark, warning sound 5s + vibration 1.5s . 5th Trigger Bark, 5 Seconds Warning Sound + 2 Seconds Vibration. 6th Trigger Bark, 5 Seconds Warning Sound + 3 Seconds Vibration. 7th Trigger Bark, 5 seconds warning sound + 4 seconds vibration. If the dog still does not respond, the product will automatically stop working. After 1