THlighting 4 Pack USB Phone Fans,Mini Portable fans for mirco usb Android Phones,2 in 1 Design Micro USB+USB Rotatable fan with safety soft foam fan blades Slim and light weight USB fan keep you cool on hot days used for any andriod phone with OTG function, Mobile Power and Notebooks(Note the direction of USB connector) 2in1 Design, Micro USB+USB 2.0.To apply for computer,Android phone,power bank,tablet etc It is a most fashion phone gadgets this summer