KLOUD City Blue Personal Hand-held/Portable Battery Operated Mini Air Fan for Home and Travel It should use AA Battery but this item not include battery The fan leaf is made of soft sponge and would not hurt hands The head of fan have 4 adjustable position Easy to push button - AA batteries required (best with Polaroid AA batteries), The fan leaf is made of soft sponge and would not hurt hands, The head of fan have 4 adjustable position, Easy to push button, Please make sure your battery is right , if the positive and negative terminals of the battery is wrong ,the fan blade will spun backwards