This is an alcohol stove, in spite of not looking like a stove.
Originally, it is designed for a wood-burning stove, acting as an igniting part.
Using zirconium oxide fiber(or other uninflammable fiber) as a huge wick, for its long term use;
Output power adjustable, depending on the length of the wick;
Flame height adjustable;
Convenient to put out the fire, by shutting the lid,
Fully sealed, keeping unconsumed alcohol for next time use;
Preheat and overheat controls are all very good,
Air interface wide, high combustion efficiency.