WT-F60 Laptop Computer Hanging Screen Fan USB Rechargeable Desktop Vertical Fan 1. Four motor turbine blades with manual wind direction adjustment 2. Powerful quad-core motor for long air output from air-conditioning, providing a delicate and even airflow that covers the entire area 3. Brushless pure copper motor operates quietly, while the leafless air duct prevents headaches even after prolonged use 4. Three wind power settings to cater to different preferences 5. Can be hung or placed on the desktop with a detachable base for versatile usage scenarios 6. Enhanced spring clip design suitable for various screens 7. Elegant harmonica shape with exquisite electroplating process, overall design is simple and attractive Parameter: 1. Material: ABS 2. Input voltage: DC 5V 3. Input current: 2A 4. Fan working power: 1.99W, 4.1W, 7.4W 5. Battery capacity: Built-in 4000mAh battery, 3.7V 6. Charging time: 3.5 hours 7. Use time: 7.1 hours on the first gear, 3.4 hours on the second gear, and 1.9 hours on the third gear 8. Motor speed: 2500rpm, 3200rpm, 3900rpm 9. Product size: 353 x 75.7 x 42.2mm 10. Net weight: 418 grams Packing list: main unit x 1, data cable x 1, manual x 1, base x 1