Yoosion USB FAN Clip Portable 2200mAh Rechargeable Battery Powered USB Desk Fan 4 Blades Quite Personal Cooling Mini Fans *If the fan does not work well, please contact us directly, we will resend a new one to you. Support 2 kinds of different wayshorizontal placement or clamp it on edge of your furniture (About 4cm Clip Width). Support 360 multi-angle manual rotation, you can chose the best wind direction freely. Using latest high-quality motor, stable and quiet operation, does not affect your daytime working, or sleeping at night. Also suits for little Baby. (More stronger wind, more louder sound) 4 blades designed to create high rotate speed and cool environment, just like natural wind, max speed up to 3500RPM. 3W low consumption, saving energy and environmental protection. One rotating switch in the back side supports multiple wind adjustment, you can select the most suitable wind easily. And it can work 24.5 hours after fully charged( influenced by the wind level you chose and battery status). Built-in 2200mAh rechargeable lithium battery and USB charging cable, you can use phone DC5V charger, mobile power bank, notebooks or other USB devices to charge for it.