This mini handheld fan have built-in LED light, the light is beautiful. Press for two seconds to turn on the light, then long press to turn off the light, press the power button of the USB Mini fan to adjust the speed. Press acceleration to reach 3500 r/min, press again to reach 5000 r/min, and the third time to reach 5800 r/min. It is powered by an improved rechargeable Li-polymer battery, which can support the mini fan to work longer than a regular Li-polymer battery with the same capacity. You can take it all summer or put it in your pocket and bag. It is perfect for children. With a lanyard children can cool down while reading, playing sports, playing games and traveling.