Flush mount, simply screw into any E27 light socket, no wiring necessary, no professional electrician, quick efficient installation With three working modes: light work independently, fan work seperately, and fan & light work together, power switch is on the for shell, you can switch the three working modes at will Built-in 5 fan is great for kids room and nursery, also can be used for living room,, garage, farmhouse, bedroom, kitchen, study and more, brings you cool in hot It measures 5.79 inch in diameter and 3.54 " in height, built-in 10w 6000K cold white LED light, soft wind and low, adjustable in three gears Multi-function design, it is not only a LED light with E27 lamp for head, but also a hanging fan, comes with a B22 to E27 adapter, allows you to extended connetcion with more devices, AC 86V-265V wide voltage