5-year guarantee ensures long-term peace of mind and reliability Strong Wind: The inbuilt first- new copper made brushless motor is stronger and have a longer lifespan than the regular motor, which can support the blades run at high speed to produce powerful wind, the front cover has a fluid-mechanical design that can maximize air movement. USB Powered: Comes with a USB cable that compatible with all USB ports, such as a computer, power bank, wall chargers, and any other USB-enabled power supply, you can simply plug it into the power supply for the whole day or night working. Speed Adjustable: The portable fan with 3 adjustable speeds is adequate for your various cooling demand, just press the power button to change the speed, it will always keep you cool at a low speed, the high speed is strong enough to cool you down quickly after heavy sweat. Quiet Operation: You can barely hear it at the low speed, the working sound is lower than 45db at the high speed, which is unnoticeable and will not disturb what you are doing, the mini fan is ideal to use when studying, reading, working, sleeping, doing yoga, etc. Angle Adjustable: You may need to tilt and adjust the fan so you can enjoy the cool breeze based on your need. The frame can be adjusted 210 degrees up and down. This provides comfortability anywhere you are. The smart and compact design allows this USB table fan to be placed anywhere on the table or on any other flat surface