ChuangYi Portable 2in1 OTG Micro USB Mini Phone Fan Dock Handy Cooler Cooling Flexible Personal Mini Fan for Android Phone,Tablet Notebook,Mobile power (Pink) Runs on most android phone or power bank with USB and Micro USB connection,Note that Android fans must be system support OTG function before you can use SAFE & EASY TO USE - The fan is made of materials of high quality silicone, which is environmental and safe. Rubbery blades won't hurt or cut yourself if accidentally touch the blades with a part of your body. Power button free, simply plug in to turn on and unplug it to turn off. HANDY & PORTABLE - Removable propeller, making it easier to store or carry around, like in a pocket or backpack, can be used at home, office, school, airplanes, elevators, standing in lines, children in cars/strollers, stadiums, sports events, at the pool, etc. A MUST HAVE FOR SUMMER - If you are someone who gets overheated or have children and need an in a pinch cooling device, this is for you! Funny affordable gift for yourself, your families or friends TPE environmental protection material