Keep cool as you read a book, watch a movie, or when you are traveling during hot summer days with the portable mini USB fan. Small but efficient when operating, the fan makes minimal noise making it easy to use in an office. This mini fan is extremely useful when participating in any outdoor activities or on a daily basis. Simply attach the fan onto the motor then plug it into your device. The portable mini USB fan is compatible with any USB-C enabled device and the device must support OTG.