RTA atomizers (Rebuildable Tank Atomizer) are rebuildable atomizers with a tank.
You can then carry out your assembly using resistive wire (Kanthal, Inowire, Ni80 ...) or already pre-made coils (Arka coils for example ...) and cotton. The cotton is used to bring the liquid to the coil.
If you are looking for autonomy and low liquid consumption, we advise you to go for so-called MTL (tight draft) atomizers of the Kayfun Lite / plus, Kayfun Prime type. These MTL atomizers allow you to have a high nicotine level.
You also have the option of chossing for a DLR airflow which will be slightly more aerial like the Haar for example. The hit (scratching sensation in the throat) will be a little stronger than on an MTL atomizer.
Finally, if you are looking for more vapors without sacrificing flavors, you will have to go for a DL atomizer like the Kayfun 5².