Plug the awesome led clock fan into any usb port to power the fan and the spinning blades will power cleverly aligned red and green leds displaying the time on an analog clock face with moving hour minute and second hands r r soft fan blades blow a soft breeze to cool you as you work and are also extremely flexible and safe for use even to stray fingers the flexible chrome cable allows you to position the fan wherever you would like and even better the clock wont lose time when you unp