Quiet Operation:Using ABS blade, quiet opertion for personal using, perfect for office home, dorm, study, library, games room using ? Kindly remind:Please ONLY order from "UKHONK",and shipped by Amazon ,if you buy a fake USB desk fan from other seller("MJiang?Holo Cute"this 2 sellers do not arrange shipping for you),we are not responsible for this.180°Rotation:The fan head rotates 180 degrees so you can point it upwards or downwards,2 speed-low and high level It can compatible with computers, laptops, portable chargers,power bank and other devices with USB output. Powered by a 39 inch USB cable. Compact Size:5.5 x 5.5 x2.3 inch,5 blades and 5.5 inch frame saves your desk space,saving your place 7X24 hours customer service,worry-free 100% money-back guarantee,1-Years Replacement Warranty and life-time technical support