In order to be cheap, the lamp is used to indicate the electricity, indicating that it is charging, indicating that the power supply is working normally. This is a very simple, low cost solution. As you can see on TV, a long time ago, when I was just founded, there was no display, and the working state of the machine was indicated by the flashing of lights. Since it is represented by a lamp, it is indicated by the state of flashing all the time to indicate normal work. But the light is too bright at night and around the eyes, I don't know. The selling point of millet power is cheap and cost-effective. Not use to feel high-end. There are also high-end products on the market that do not flash lights but have small LCD displays. But I'm not buying it for a couple hundred bucks. Of course, I didn't buy any millet. I used Miller