【Three Light Modes】This mini usb led rgb light has three modes. If you choose solid color fixed mode, the color and brightness stay the same. And if you choose 8 colors breath mode, the color and brightness will change by itself. The last mode is quite similar with the solid color fixed mode, but it will change brightness in one color. | 【8 Colors Gradually Changing and Memory Function】When you insert this usb light, it will start with red color and gradually change colors. Colors don't change by itself? Don't worry, tap the button and change the color. When the color go through a cycle which means going back to red color, it will automatically change colors again. When the color that you choose lasts 10 seconds, it will remember this color, so next time when it turns on it will still keep this color. | 【Fits Any Equiment With USB Ports】When you use it in car, it shines downward to light up your footwell area so they won't blind you at night. And it also works with any powered usb. Any usb ports are available. | 【Easy To Operate】Double tap to change the light mode between solid and breath. In color changing situation, one tap will change the light into single color and another tap will change the color. After three taps,the light will turn off. | 【Light Sensor and Consumption】When the sensor senses the strong light, it will turn off after 10 seconds by itself. And if it is in dark environment, it will turn on automatically. The output power of the light is just 0.1W.