✔✔ Advanced concentrator technology with quick-heat head Heavy duty motor with very little noise overheat protection True cold shot includes fast dry and super slim precision styling concentrators diffuser 1800 w Long life Dc motorm, Note – If the appliance overheats, Unplug the appliance and let it cool down for a few minutes. Before you switch the appliance on again, check the grilles to make sure they are not blocked by fluff, hair, Etc