The usb fan blades are bigger and the wind is stronger.This usb fan has an adjustable 4 speed wind speed,giving you more options in different temperature environments.The ultra quiet decibel usb desktop fan has good noise handling capability.Even in super wind speed mode,the noise is less than 55dB.It's a great companion for quiet work and sleep,ideal for desks,offices,bedrooms,RVs and camping.This five blade desktop fan does not require batteries,and is powered by a 4.9 foot USB cable,compatible with laptops,power banks,wall chargers and any other USB power sources,plug and play,energy saving and environmentally friendly.
