①. The fan comes in two styles: standard and upgraded. Only the upgraded model supports timing mode and intermittent blowing mode. ②. The fan can be clamped, placed or hung. Detachable design, turn left to remove the mesh cover, easy to clean. ③. The USB fan is powered by USB and is compatible with computer/laptop, power bank, AC adapter, car charger and other USB - supported power sources. It can be used wirelessly even when fully charged. ④. It has 4 streamlined fan blades to reduce noise, reduce air resistance and increase airflow. It is a good choice for family, car, office, desktop, camping or travel. ⑤. Working mode: - Intermittent blowing mode: In the working state of the fan, click the mode button to enter the intermittent blowing mode (blow for 10 seconds and stop for 5 seconds), the LED light becomes a breathing lamp. Press again to cancel. - Time setting mode: When the fan is running, long press the mode button to set the time to 60 minutes, and the 2nd LED will light up. Long press the mode button again, the time will be 120 minutes, and the 3rd LED will light up. Long press the mode button for the third time to cancel the time.