Atomizers these commonly come in standard resistance which is stated in ohms, 2.4/2.8 is average for most small atomizers, you can purchase lower resistance atomizers, the benefit of these is they heat faster producing thicker vapour with each draw you take, the downside is they burn out much faster and could be costly to constantly replace. Atomizers are sold by all retailers as a DOA product meaning they will only replace it if it is dead on arrival=doesn't work out of the box, the reason for this is because it is so easy to burn the atomizer out very fast if you got it very hot and then still kept puffing on it. If you treat your kit properly and look after it keeping it clean and maintained it will last you a lot longer.