Pakway Portable Handheld USB Mini Misting Fan with Personal Cooling Mist Humidifier Rechargeable Battery for Home Office car (GREEN) 3 Modes: Only Humidifier/ Only Fan/ Both Humidifier and Fan Work together .Help we often keep the face or skin moist and refreshing Powered by rechargeable battery with a micro USB port, Light-weight and handle design,convenient to carry anywhere and anytime. Two buttons to Operate: 1) "On/ Off" button to turn on and off the device, 2) "Power" Button is to choose the circulation modes you like. Functional, rechargeable USB mini cooling fan and beauty humidifier 2 in 1 Silica gel plug: more compact and anti-spill water. add water at the top for humidifier. Please use pure water,Avoid using essential oil or other chemical corrosive substances.