Usb Desk Fan, 3 Speeds Strong Airflow, 5.5 Inch Portable 90degree(s) Rotate Quiet Cooling, Small Personal Table Fans for Bedroom Home Office Travel Black. 3-Speed Adjustable: The desk fan is equipped with 3-speed airflow, Speed 1: soft wind, 3.1m/s, 1500rpm Speed 2: high wind, 4.0m/s, 2000rpm Speed 3: strong wind, 4.8m/s, 2500rpm 3 wind speeds of the Usb fan can reach your various cooling demands Ultra Quiet: With upgraded motor, the table fan has stronger wind and less noise, max wind speed reaches 4.8m/s at highest speed The personal fan is powerful and quiet enough to give you a comfortable working and resting environment Small and Light Portable Fan: The travel fan size is only 5.55.92.2in, and about 6.5oz lightweight, so it can be easily carried in your bag for traveling The cooling fan comes with a 4.9ft long cord, it's great for home, office, dorm, library