High quality fan smaĺl and powerfull. The structure of these fan is unique and fashionable. Using the international standard 18650 capacity lithium batteries. Rechargeable Multifunctional Fan. Portable Compact Rechargeable, Use it Inside or Outside,Replaceable Battery Energy Conservation & Environment Protection, Micro USB Charging (Can be charged with normal mobile charger) Brand other SKU OT776HL1MU3JKNAFAMZ-27405