4 Adjustable Speeds: The USB charging fan has 4 adjustable speeds. The advanced brushless motor is equipped with three 8 inch large torque fan blades which can provide powerful wind in ultra-quiet conditions to meet different cooling needs and let you cool down quickly. 2-in-1 Fan: The USB clip fan can be used as a portable desktop fan and also has a strong base clamp. The multi-function clamp can be opened 3 inches, which can be fixed on the edge of the treadmill or bedside during exercise or sleep, saving space. 360 Double Rotation: The electric fan supports vertical and horizontal 360 double rotation, not only the fan head can be rotated 360 vertically, but the base can also be rotated 360 horizontally. Choose cool air from any direction to keep you cool from any angle. Dual USB Power: This rechargeable fan has two USB charging ports, supports 5V-2A fast charging, compatible with car chargers, laptops, power bank, USB outlets, etc. Equipped with 10000mAh battery which can last up to 24 hours when fully charged. Wide Application:USB fans are used indoors and outdoors. It is ideal for homes, offices and bedrooms. It can also be carried with you (requires power supply) for travel and camping. It's a great choice for summer gifts.