Opposite of many units, you let this one heat up to temperature, and vape once the heater auto-clicks off. The heater has a unique way of retaining that heat, so you vape as the temperature slowly lessens, and click it on again when it starts to feel low. The unit can uses a small capsule to microdose, but I like to use the Plenty as was intended. It works best filled to the brim (generally a gram or more) and the sessions can go on forever!. Perhaps more folks that are Plenty fans will chime in.