General description Upgraded Version — This mini portable USB fan features a 5-blade design and a brushless motor, producing a powerful breeze with minimal noise levels ranging between 20-30dB. It is ideal for use at home or in the office, allowing you to work, read, or relax without distractions. The fan offers 3 adjustable airflow speed settings to meet your cooling needs. Technical specifications Noise levels: between 20-30dB Size: 12.5 x 12.5 x 5 cm USB cable length: 1.2 m Power: compatible with 5V output USB devices Usage First gear: noise below 20dB, suitable for sleep Second gear: designed for work and study Third gear: provides strong cooling for outdoor leisure One switch operation for simplicity Other information Adjustable angle: fan frame can rotate 360 degrees Flexible tilt adjustment for optimal airflow