Upgraded Version - 5-blade USB case fan with brushless motor, produces a powerful breeze with lower noise (between 20 and 30 dB). Stay cool while making minimal noise, so you can work, read, or relax without distraction. 3-Speed Wind - The fan with 3 airflow speed settings can be adjusted to your needs. Comfortable first speed with less than 20 dB noise, suitable for sleeping; Natural second speed, designed for work and study; Cool third speed, powerful, so you can enjoy your leisure time outdoors. One-button switch simplifies operation. USB Powered - With a 1.2 m long USB cable, compatible with USB devices with 5 V output, such as computers, laptops, power banks, portable chargers, and other devices with a USB output. Adjustable Angle - The fan frame rotates 360 degrees, making it very flexible. You can adjust the fan's tilt up and down as needed to enjoy the cool breeze. It's very convenient no matter where you are. Mini Fan Design - Size 12.5 x 12.5 x 5 cm (0.18 kg), portable and