Chainplus 4 Inch Small USB Desk Fan, Mini Quiet Fan with Metal Construction & Strong Airflow & 180°Adjustable Tilt Angle, Personal Cooling Fan for Desktop Office (Green)

【Strong Airflow】: Mini desk fan was used a powerful upgraded motor and four aluminum blade adjust professional balance technology to enhance the airflow up to (3.1m/s),metal frame as well as aluminum Fan blade make the USB fan safe and reliable.
【360° Rotation】: 360° up and down, free angle adjustment. Small USB Fan can provide cooling from various directions.
【Muti Charging Modes & Energy Saving】:The usb cooling fan would be used by inserting it in a personal computer, power bank,an usb charger or other device with usb output.No battery needed. The table fan consumes 2.5W power per hour and saves around 99% power than traditional fan.
【Wide Application】: 4 inch small size, the portable fan could easy fit into a laptop bag, suit for home, office, traveling and camping.