Happy-top Mini Handheld Square Electrical Portable USB Rechargeable Fan, Black Double use desktop fan or clip fan with usb output, can be used as a power bank to charge your devices One bottom control 3 adjustable modes: High-middle-low, with clip base can be used as desktop fan or clip fan with the clip Press quickly for twice can turn on or turn off the side led light, long press for 3 seconds can activate power bank function Emergent power bank fan, can be used to charge you devices when doing out door activities 18650 rechargeable battery powered fan with an led flashlight in it can give out light if necessary