PVC Soft fan blades : The blades are made of soft materials, doesn\'t hurt anyone if you accidentally touch it. LED LIGHT DISPLAY TIME: Set up very easy,Press and hold the set button until the second hand starts to blink, then let off the button and hold it in.. the clock hands should begin to spin.. let off when the desired hour is reached and then press the button for each desired minute until the correct time is shown. After the time has been set, even when it is off and unplugged, the next time you turn it on,the time will still be correct. Widely compatible ： usb led fan is cool design and convenience accessory in office, room and camping. Works on any USB outlet you could find, USB port PC, charging treasure, USB plug Operation Is Simple and Adjustable：The flexible gooseneck of this USB fan can easily be bent in any direction as desired. No drive, just plug clock fan into a USB Compact and Light Weight,Easy to use: it\'s very convenient to carry or put it in your bag when you are outdoor as a personal cooling fan.