The Smartmi Electric heater is a natural convection heater that offers rapid and quiet heating. It also offers greater heat efficiency than most other electric heaters of a similar volume. In order to cut production costs, the heater is mostly constructed from sheet metal, which offers excellent natural convection, though the handles are comfortable to touch even when the heater is working at full power. The three-stage rocker switch is very easy to operate and the heater range is clear at a glance.