Pod kits do not have a clearomiser like a conventional kit, but a pod cartridge instead. The latter clips directly onto the battery and has a more or less substantial capacity depending on the model. Some pod cartridges allow you to change the resistance, while others will not ... When the resistance is used, unlike a clearomiser where you just change the resistance, here, it's the whole cartridge pod that must be changed!
On the other hand, cartridges have the advantage of allowing you to vary the pleasures throughout the day and to be able to vape liquids with nicotine salts. Are you undecided or looking for simplicity? Prepare several e-liquid cartridges and clip. This ingenious system will guarantee total satisfaction!