Those numbers are resistance measured in ohms, and they are genuinely important because they change how tight or loose the draw is, and they affect which nicotine strength works best. Start with 1.2ohm if you are coming from cigarettes or using 20mg nic salts - it gives you a tight, warm draw that feels familiar and cigarette-like, which is why it is usually the first one you try. Once you have a few pods under your belt and understand the feel, the 0.8ohm gives a slightly looser draw that sits between tight mouth-to-lung and airy, and pairs well with 10 to 20mg. The 0.6ohm is looser still and is designed for people who want a more open airflow and are using lower nicotine or freebase liquid. The real rule is simple: start at 1.2ohm with 20mg nic salts if you are new, because that combination is forgiving and matches how the device is tuned. If you feel like experimenting after you have got the basics down, try a lower resistance pod and see if it suits your style better, but do not feel obligated - plenty of people never move past 1.2ohm. Our pod compatibility guide has the full breakdown of what each resistance actually does.

I picked the wrong pod the first time and got 0.6 when I should have started 1.2. Massive difference - the 1.2 finally felt like a proper cigarette replacement and I stuck with it.

The 0.8 ended up being my sweet spot after trying the tighter one. Everyone is different so that step-by-step makes sense.

Right, so 1.2 is the starter and 20mg is the liquid to go with it. I have got those already so I am actually in the right place. Good to know I can experiment later if I want but that I do not have to.