Bring home the cool breeze of the outdoors. Powered by a premium DC inverter motor, the Smartmi Standing Fan 2S has a longer life span and reduced kinetic energy loss compared to traditional fans. The golden 7-blade design covers a wider area and provides powerful air supply with extremely low power consumption, recreating the fresh and natural breeze of nature. The Smartmi Fan 2S has a built-in lithium-ion battery, fully charged to support wireless use from 3h(at the highest level) to 20h(at the lowest level). You can place the fan in your living room for some relaxing comfort.