USB Powered Fan:The desktop fan uses USB charging, which is very convenient and energy efficient, compatible with PC/laptop, mobile power, USB plug, car charger and other USB power supply. Replenish energy anytime, anywhere. Detachable Fan Guard:The cover can be detached easily by rotating lid gently and you can clean the fan cover blade or even the inner part as you wish. Compact Size:22.5 x 22 x 6CM,7 blades frame saves your desk space,saving your place Quiet Operation:Using ABS blade, quiet opertion for personal using, perfect for office home, dorm, study, library, games room using Specifications: color: white Material: ABS plastic Size: 22.5 x 22 x 6cm Input method: USB Powered Package Contents: 1 x fan (USB Powered)Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.