Are you looking for a cooling sensation in hot summer while you are in front of the PC or dealing with your mobile phone? If you do then this mini sized, portable micro USB fan is ideal gadget which should be with you. Keep in your mind that this mobile phone fan cannot work with power banks. Other than that, this is compatible with iPhone and micro USB interface Android mobile phone (need the android mobile phone built in OTG function). The blades are made of the environmental friendly material, TPE and they are really protective blades so that no hurt on your hands even in an unexpected touch.